Home / 102,699,490.38-141,728,724.20-56,289,863.22

Finding the Fourth Proportional to 102,699,490.38, 141,728,724.20 and 56,289,863.22

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Solution

The fourth proportional to 102,699,490.38, 141,728,724.20 and 56,289,863.22 is: 77,681,889.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,699,490.38 : 141,728,724.20 = 56,289,863.22 : x
  2. Step 2: Convert to fraction form
    102,699,490.38/141,728,724.20 = 56,289,863.22/x
  3. Step 3: Cross multiply
    102,699,490.38x = 141,728,724.20 × 56,289,863.22
  4. Step 4: Simplify right side
    102,699,490.38x = 7,977,890,499,172,345
  5. Step 5: Solve for x
    x = 7,977,890,499,172,345/102,699,490.38
  6. Step 6: Final answer
    x = 77,681,889.85

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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.