Home / 145,177.92-200,345.36-81,515.96

Finding the Fourth Proportional to 145,177.92, 200,345.36 and 81,515.96

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Solution

The fourth proportional to 145,177.92, 200,345.36 and 81,515.96 is: 112,491.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,177.92 : 200,345.36 = 81,515.96 : x
  2. Step 2: Convert to fraction form
    145,177.92/200,345.36 = 81,515.96/x
  3. Step 3: Cross multiply
    145,177.92x = 200,345.36 × 81,515.96
  4. Step 4: Simplify right side
    145,177.92x = 16,331,344,351.95
  5. Step 5: Solve for x
    x = 16,331,344,351.95/145,177.92
  6. Step 6: Final answer
    x = 112,491.93

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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.