Home / 125,143.55-172,697.23-67,781.58

Finding the Fourth Proportional to 125,143.55, 172,697.23 and 67,781.58

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Solution

The fourth proportional to 125,143.55, 172,697.23 and 67,781.58 is: 93,538.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,143.55 : 172,697.23 = 67,781.58 : x
  2. Step 2: Convert to fraction form
    125,143.55/172,697.23 = 67,781.58/x
  3. Step 3: Cross multiply
    125,143.55x = 172,697.23 × 67,781.58
  4. Step 4: Simplify right side
    125,143.55x = 11,705,690,548.14
  5. Step 5: Solve for x
    x = 11,705,690,548.14/125,143.55
  6. Step 6: Final answer
    x = 93,538.11

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1.5x scale

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.