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Finding the Fourth Proportional to 159,505.85, 220,117.88 and 87,885.85

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Solution

The fourth proportional to 159,505.85, 220,117.88 and 87,885.85 is: 121,282.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,505.85 : 220,117.88 = 87,885.85 : x
  2. Step 2: Convert to fraction form
    159,505.85/220,117.88 = 87,885.85/x
  3. Step 3: Cross multiply
    159,505.85x = 220,117.88 × 87,885.85
  4. Step 4: Simplify right side
    159,505.85x = 19,345,246,984.00
  5. Step 5: Solve for x
    x = 19,345,246,984.00/159,505.85
  6. Step 6: Final answer
    x = 121,282.37

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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.