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Finding the Fourth Proportional to 130,472.80, 195,715.60 and 68,264.80

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Solution

The fourth proportional to 130,472.80, 195,715.60 and 68,264.80 is: 102,400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,472.80 : 195,715.60 = 68,264.80 : x
  2. Step 2: Convert to fraction form
    130,472.80/195,715.60 = 68,264.80/x
  3. Step 3: Cross multiply
    130,472.80x = 195,715.60 × 68,264.80
  4. Step 4: Simplify right side
    130,472.80x = 13,360,486,290.88
  5. Step 5: Solve for x
    x = 13,360,486,290.88/130,472.80
  6. Step 6: Final answer
    x = 102,400.55

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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.