Home / 125,098.17-172,665.90-77,322.75

Finding the Fourth Proportional to 125,098.17, 172,665.90 and 77,322.75

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Solution

The fourth proportional to 125,098.17, 172,665.90 and 77,322.75 is: 106,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,098.17 : 172,665.90 = 77,322.75 : x
  2. Step 2: Convert to fraction form
    125,098.17/172,665.90 = 77,322.75/x
  3. Step 3: Cross multiply
    125,098.17x = 172,665.90 × 77,322.75
  4. Step 4: Simplify right side
    125,098.17x = 13,351,002,219.23
  5. Step 5: Solve for x
    x = 13,351,002,219.23/125,098.17
  6. Step 6: Final answer
    x = 106,724.20

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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.