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Finding the Fourth Proportional to 158,225.70, 218,343.02 and 86,591.87

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Solution

The fourth proportional to 158,225.70, 218,343.02 and 86,591.87 is: 119,492.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,225.70 : 218,343.02 = 86,591.87 : x
  2. Step 2: Convert to fraction form
    158,225.70/218,343.02 = 86,591.87/x
  3. Step 3: Cross multiply
    158,225.70x = 218,343.02 × 86,591.87
  4. Step 4: Simplify right side
    158,225.70x = 18,906,728,878.57
  5. Step 5: Solve for x
    x = 18,906,728,878.57/158,225.70
  6. Step 6: Final answer
    x = 119,492.15

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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.