Home / 159,436.16-220,031.87-87,816.17

Finding the Fourth Proportional to 159,436.16, 220,031.87 and 87,816.17

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Solution

The fourth proportional to 159,436.16, 220,031.87 and 87,816.17 is: 121,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,436.16 : 220,031.87 = 87,816.17 : x
  2. Step 2: Convert to fraction form
    159,436.16/220,031.87 = 87,816.17/x
  3. Step 3: Cross multiply
    159,436.16x = 220,031.87 × 87,816.17
  4. Step 4: Simplify right side
    159,436.16x = 19,322,354,562.10
  5. Step 5: Solve for x
    x = 19,322,354,562.10/159,436.16
  6. Step 6: Final answer
    x = 121,191.80

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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.