Home / 129,503,009,068.38-178,702,159,255.61-71,630,143,305.23

Finding the Fourth Proportional to 129,503,009,068.38, 178,702,159,255.61 and 71,630,143,305.23

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Solution

The fourth proportional to 129,503,009,068.38, 178,702,159,255.61 and 71,630,143,305.23 is: 98,842,964,101.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,503,009,068.38 : 178,702,159,255.61 = 71,630,143,305.23 : x
  2. Step 2: Convert to fraction form
    129,503,009,068.38/178,702,159,255.61 = 71,630,143,305.23/x
  3. Step 3: Cross multiply
    129,503,009,068.38x = 178,702,159,255.61 × 71,630,143,305.23
  4. Step 4: Simplify right side
    129,503,009,068.38x = 12,800,461,276,432,484,532,224
  5. Step 5: Solve for x
    x = 12,800,461,276,432,484,532,224/129,503,009,068.38
  6. Step 6: Final answer
    x = 98,842,964,101.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.