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Finding the Fourth Proportional to 144,266.91, 199,143.87 and 129,132.87

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Solution

The fourth proportional to 144,266.91, 199,143.87 and 129,132.87 is: 178,253.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,266.91 : 199,143.87 = 129,132.87 : x
  2. Step 2: Convert to fraction form
    144,266.91/199,143.87 = 129,132.87/x
  3. Step 3: Cross multiply
    144,266.91x = 199,143.87 × 129,132.87
  4. Step 4: Simplify right side
    144,266.91x = 25,716,018,244.97
  5. Step 5: Solve for x
    x = 25,716,018,244.97/144,266.91
  6. Step 6: Final answer
    x = 178,253.07

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1.5x scale

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.