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Finding the Fourth Proportional to 158,614.50, 218,902.05 and 87,008.46

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Solution

The fourth proportional to 158,614.50, 218,902.05 and 87,008.46 is: 120,079.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,614.50 : 218,902.05 = 87,008.46 : x
  2. Step 2: Convert to fraction form
    158,614.50/218,902.05 = 87,008.46/x
  3. Step 3: Cross multiply
    158,614.50x = 218,902.05 × 87,008.46
  4. Step 4: Simplify right side
    158,614.50x = 19,046,330,261.34
  5. Step 5: Solve for x
    x = 19,046,330,261.34/158,614.50
  6. Step 6: Final answer
    x = 120,079.38

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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.