Home / 91,006.20-136,217.70-71,177.40

Finding the Fourth Proportional to 91,006.20, 136,217.70 and 71,177.40

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Solution

The fourth proportional to 91,006.20, 136,217.70 and 71,177.40 is: 106,538.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,006.20 : 136,217.70 = 71,177.40 : x
  2. Step 2: Convert to fraction form
    91,006.20/136,217.70 = 71,177.40/x
  3. Step 3: Cross multiply
    91,006.20x = 136,217.70 × 71,177.40
  4. Step 4: Simplify right side
    91,006.20x = 9,695,621,719.98
  5. Step 5: Solve for x
    x = 9,695,621,719.98/91,006.20
  6. Step 6: Final answer
    x = 106,538.03

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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.