Home / 127,983.20-191,715.60-72,514.40

Finding the Fourth Proportional to 127,983.20, 191,715.60 and 72,514.40

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Solution

The fourth proportional to 127,983.20, 191,715.60 and 72,514.40 is: 108,624.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,983.20 : 191,715.60 = 72,514.40 : x
  2. Step 2: Convert to fraction form
    127,983.20/191,715.60 = 72,514.40/x
  3. Step 3: Cross multiply
    127,983.20x = 191,715.60 × 72,514.40
  4. Step 4: Simplify right side
    127,983.20x = 13,902,141,704.64
  5. Step 5: Solve for x
    x = 13,902,141,704.64/127,983.20
  6. Step 6: Final answer
    x = 108,624.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.