Home / 129,088,826.82-178,148,897.30-72,591,354.97

Finding the Fourth Proportional to 129,088,826.82, 178,148,897.30 and 72,591,354.97

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Solution

The fourth proportional to 129,088,826.82, 178,148,897.30 and 72,591,354.97 is: 100,179,621.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,088,826.82 : 178,148,897.30 = 72,591,354.97 : x
  2. Step 2: Convert to fraction form
    129,088,826.82/178,148,897.30 = 72,591,354.97/x
  3. Step 3: Cross multiply
    129,088,826.82x = 178,148,897.30 × 72,591,354.97
  4. Step 4: Simplify right side
    129,088,826.82x = 12,932,069,841,154,482
  5. Step 5: Solve for x
    x = 12,932,069,841,154,482/129,088,826.82
  6. Step 6: Final answer
    x = 100,179,621.74

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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.