Home / 115,491.11-159,373.22-72,493.70

Finding the Fourth Proportional to 115,491.11, 159,373.22 and 72,493.70

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Solution

The fourth proportional to 115,491.11, 159,373.22 and 72,493.70 is: 100,038.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,491.11 : 159,373.22 = 72,493.70 : x
  2. Step 2: Convert to fraction form
    115,491.11/159,373.22 = 72,493.70/x
  3. Step 3: Cross multiply
    115,491.11x = 159,373.22 × 72,493.70
  4. Step 4: Simplify right side
    115,491.11x = 11,553,553,239.38
  5. Step 5: Solve for x
    x = 11,553,553,239.38/115,491.11
  6. Step 6: Final answer
    x = 100,038.47

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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.