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Finding the Fourth Proportional to 92,221.70, 138,332.55 and 65,649.65

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Solution

The fourth proportional to 92,221.70, 138,332.55 and 65,649.65 is: 98,474.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,221.70 : 138,332.55 = 65,649.65 : x
  2. Step 2: Convert to fraction form
    92,221.70/138,332.55 = 65,649.65/x
  3. Step 3: Cross multiply
    92,221.70x = 138,332.55 × 65,649.65
  4. Step 4: Simplify right side
    92,221.70x = 9,081,483,491.11
  5. Step 5: Solve for x
    x = 9,081,483,491.11/92,221.70
  6. Step 6: Final answer
    x = 98,474.48

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Similar ratio
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1.5x scale

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.