Home / 129,181,867.12-178,275,281.70-70,447,746.52

Finding the Fourth Proportional to 129,181,867.12, 178,275,281.70 and 70,447,746.52

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Solution

The fourth proportional to 129,181,867.12, 178,275,281.70 and 70,447,746.52 is: 97,220,237.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,181,867.12 : 178,275,281.70 = 70,447,746.52 : x
  2. Step 2: Convert to fraction form
    129,181,867.12/178,275,281.70 = 70,447,746.52/x
  3. Step 3: Cross multiply
    129,181,867.12x = 178,275,281.70 × 70,447,746.52
  4. Step 4: Simplify right side
    129,181,867.12x = 12,559,091,855,983,194
  5. Step 5: Solve for x
    x = 12,559,091,855,983,194/129,181,867.12
  6. Step 6: Final answer
    x = 97,220,237.92

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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.