Home / 159,601.72-220,247.61-87,988.40

Finding the Fourth Proportional to 159,601.72, 220,247.61 and 87,988.40

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Solution

The fourth proportional to 159,601.72, 220,247.61 and 87,988.40 is: 121,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,601.72 : 220,247.61 = 87,988.40 : x
  2. Step 2: Convert to fraction form
    159,601.72/220,247.61 = 87,988.40/x
  3. Step 3: Cross multiply
    159,601.72x = 220,247.61 × 87,988.40
  4. Step 4: Simplify right side
    159,601.72x = 19,379,234,807.72
  5. Step 5: Solve for x
    x = 19,379,234,807.72/159,601.72
  6. Step 6: Final answer
    x = 121,422.47

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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.