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Finding the Fourth Proportional to 172,587.70, 238,170.54 and 97,136.20

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Solution

The fourth proportional to 172,587.70, 238,170.54 and 97,136.20 is: 134,047.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,587.70 : 238,170.54 = 97,136.20 : x
  2. Step 2: Convert to fraction form
    172,587.70/238,170.54 = 97,136.20/x
  3. Step 3: Cross multiply
    172,587.70x = 238,170.54 × 97,136.20
  4. Step 4: Simplify right side
    172,587.70x = 23,134,981,207.55
  5. Step 5: Solve for x
    x = 23,134,981,207.55/172,587.70
  6. Step 6: Final answer
    x = 134,047.68

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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.