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Finding the Fourth Proportional to 125,094.53, 172,606.20 and 71,378.21

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Solution

The fourth proportional to 125,094.53, 172,606.20 and 71,378.21 is: 98,488.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,094.53 : 172,606.20 = 71,378.21 : x
  2. Step 2: Convert to fraction form
    125,094.53/172,606.20 = 71,378.21/x
  3. Step 3: Cross multiply
    125,094.53x = 172,606.20 × 71,378.21
  4. Step 4: Simplify right side
    125,094.53x = 12,320,321,590.90
  5. Step 5: Solve for x
    x = 12,320,321,590.90/125,094.53
  6. Step 6: Final answer
    x = 98,488.09

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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.