Home / 138,154,627.50-190,670,104.56-78,630,396.84

Finding the Fourth Proportional to 138,154,627.50, 190,670,104.56 and 78,630,396.84

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Solution

The fourth proportional to 138,154,627.50, 190,670,104.56 and 78,630,396.84 is: 108,519,463.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,154,627.50 : 190,670,104.56 = 78,630,396.84 : x
  2. Step 2: Convert to fraction form
    138,154,627.50/190,670,104.56 = 78,630,396.84/x
  3. Step 3: Cross multiply
    138,154,627.50x = 190,670,104.56 × 78,630,396.84
  4. Step 4: Simplify right side
    138,154,627.50x = 14,992,465,987,077,094
  5. Step 5: Solve for x
    x = 14,992,465,987,077,094/138,154,627.50
  6. Step 6: Final answer
    x = 108,519,463.00

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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.