Home / 124,931.30-172,403.78-68,342

Finding the Fourth Proportional to 124,931.30, 172,403.78 and 68,342

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Solution

The fourth proportional to 124,931.30, 172,403.78 and 68,342 is: 94,311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,931.30 : 172,403.78 = 68,342 : x
  2. Step 2: Convert to fraction form
    124,931.30/172,403.78 = 68,342/x
  3. Step 3: Cross multiply
    124,931.30x = 172,403.78 × 68,342
  4. Step 4: Simplify right side
    124,931.30x = 11,782,419,132.76
  5. Step 5: Solve for x
    x = 11,782,419,132.76/124,931.30
  6. Step 6: Final answer
    x = 94,311.19

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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.