Home / 159,425.20-220,008.18-87,807.70

Finding the Fourth Proportional to 159,425.20, 220,008.18 and 87,807.70

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Solution

The fourth proportional to 159,425.20, 220,008.18 and 87,807.70 is: 121,175.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,425.20 : 220,008.18 = 87,807.70 : x
  2. Step 2: Convert to fraction form
    159,425.20/220,008.18 = 87,807.70/x
  3. Step 3: Cross multiply
    159,425.20x = 220,008.18 × 87,807.70
  4. Step 4: Simplify right side
    159,425.20x = 19,318,412,266.99
  5. Step 5: Solve for x
    x = 19,318,412,266.99/159,425.20
  6. Step 6: Final answer
    x = 121,175.40

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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.