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Finding the Fourth Proportional to 138,398.88, 206,840.02 and 101,037.62

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Solution

The fourth proportional to 138,398.88, 206,840.02 and 101,037.62 is: 151,002.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,398.88 : 206,840.02 = 101,037.62 : x
  2. Step 2: Convert to fraction form
    138,398.88/206,840.02 = 101,037.62/x
  3. Step 3: Cross multiply
    138,398.88x = 206,840.02 × 101,037.62
  4. Step 4: Simplify right side
    138,398.88x = 20,898,623,341.55
  5. Step 5: Solve for x
    x = 20,898,623,341.55/138,398.88
  6. Step 6: Final answer
    x = 151,002.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.