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Finding the Fourth Proportional to 125,317.59, 172,947.42 and 71,601.45

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Solution

The fourth proportional to 125,317.59, 172,947.42 and 71,601.45 is: 98,815.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,317.59 : 172,947.42 = 71,601.45 : x
  2. Step 2: Convert to fraction form
    125,317.59/172,947.42 = 71,601.45/x
  3. Step 3: Cross multiply
    125,317.59x = 172,947.42 × 71,601.45
  4. Step 4: Simplify right side
    125,317.59x = 12,383,286,045.76
  5. Step 5: Solve for x
    x = 12,383,286,045.76/125,317.59
  6. Step 6: Final answer
    x = 98,815.23

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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.