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Finding the Fourth Proportional to 159,617.52, 220,265.40 and 87,018.84

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Solution

The fourth proportional to 159,617.52, 220,265.40 and 87,018.84 is: 120,082.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,617.52 : 220,265.40 = 87,018.84 : x
  2. Step 2: Convert to fraction form
    159,617.52/220,265.40 = 87,018.84/x
  3. Step 3: Cross multiply
    159,617.52x = 220,265.40 × 87,018.84
  4. Step 4: Simplify right side
    159,617.52x = 19,167,239,600.14
  5. Step 5: Solve for x
    x = 19,167,239,600.14/159,617.52
  6. Step 6: Final answer
    x = 120,082.30

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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.