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Finding the Fourth Proportional to 158,141.32, 218,238.17 and 86,522.88

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Solution

The fourth proportional to 158,141.32, 218,238.17 and 86,522.88 is: 119,403.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,141.32 : 218,238.17 = 86,522.88 : x
  2. Step 2: Convert to fraction form
    158,141.32/218,238.17 = 86,522.88/x
  3. Step 3: Cross multiply
    158,141.32x = 218,238.17 × 86,522.88
  4. Step 4: Simplify right side
    158,141.32x = 18,882,595,210.64
  5. Step 5: Solve for x
    x = 18,882,595,210.64/158,141.32
  6. Step 6: Final answer
    x = 119,403.30

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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.