Home / 129,088,824.58-178,148,894.20-72,591,352.71

Finding the Fourth Proportional to 129,088,824.58, 178,148,894.20 and 72,591,352.71

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Solution

The fourth proportional to 129,088,824.58, 178,148,894.20 and 72,591,352.71 is: 100,179,618.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,088,824.58 : 178,148,894.20 = 72,591,352.71 : x
  2. Step 2: Convert to fraction form
    129,088,824.58/178,148,894.20 = 72,591,352.71/x
  3. Step 3: Cross multiply
    129,088,824.58x = 178,148,894.20 × 72,591,352.71
  4. Step 4: Simplify right side
    129,088,824.58x = 12,932,069,214,727,788
  5. Step 5: Solve for x
    x = 12,932,069,214,727,788/129,088,824.58
  6. Step 6: Final answer
    x = 100,179,618.62

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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.