Home / 106,438.08-146,892.12-61,129.20

Finding the Fourth Proportional to 106,438.08, 146,892.12 and 61,129.20

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Solution

The fourth proportional to 106,438.08, 146,892.12 and 61,129.20 is: 84,362.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,438.08 : 146,892.12 = 61,129.20 : x
  2. Step 2: Convert to fraction form
    106,438.08/146,892.12 = 61,129.20/x
  3. Step 3: Cross multiply
    106,438.08x = 146,892.12 × 61,129.20
  4. Step 4: Simplify right side
    106,438.08x = 8,979,397,781.90
  5. Step 5: Solve for x
    x = 8,979,397,781.90/106,438.08
  6. Step 6: Final answer
    x = 84,362.64

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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.