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Finding the Fourth Proportional to 129,988.76, 195,007.38 and 41,218.40

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Solution

The fourth proportional to 129,988.76, 195,007.38 and 41,218.40 is: 61,835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,988.76 : 195,007.38 = 41,218.40 : x
  2. Step 2: Convert to fraction form
    129,988.76/195,007.38 = 41,218.40/x
  3. Step 3: Cross multiply
    129,988.76x = 195,007.38 × 41,218.40
  4. Step 4: Simplify right side
    129,988.76x = 8,037,892,191.79
  5. Step 5: Solve for x
    x = 8,037,892,191.79/129,988.76
  6. Step 6: Final answer
    x = 61,835.29

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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.