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Finding the Fourth Proportional to 100,151.58, 138,207.15 and 57,707.58

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Solution

The fourth proportional to 100,151.58, 138,207.15 and 57,707.58 is: 79,635.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,151.58 : 138,207.15 = 57,707.58 : x
  2. Step 2: Convert to fraction form
    100,151.58/138,207.15 = 57,707.58/x
  3. Step 3: Cross multiply
    100,151.58x = 138,207.15 × 57,707.58
  4. Step 4: Simplify right side
    100,151.58x = 7,975,600,165.20
  5. Step 5: Solve for x
    x = 7,975,600,165.20/100,151.58
  6. Step 6: Final answer
    x = 79,635.29

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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.