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Finding the Fourth Proportional to 125,150.66, 172,720.31 and 71,443.76

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Solution

The fourth proportional to 125,150.66, 172,720.31 and 71,443.76 is: 98,599.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,150.66 : 172,720.31 = 71,443.76 : x
  2. Step 2: Convert to fraction form
    125,150.66/172,720.31 = 71,443.76/x
  3. Step 3: Cross multiply
    125,150.66x = 172,720.31 × 71,443.76
  4. Step 4: Simplify right side
    125,150.66x = 12,339,788,017.55
  5. Step 5: Solve for x
    x = 12,339,788,017.55/125,150.66
  6. Step 6: Final answer
    x = 98,599.46

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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.