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Finding the Fourth Proportional to 144,387.36, 199,201.68 and 87,039.36

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Solution

The fourth proportional to 144,387.36, 199,201.68 and 87,039.36 is: 120,082.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,387.36 : 199,201.68 = 87,039.36 : x
  2. Step 2: Convert to fraction form
    144,387.36/199,201.68 = 87,039.36/x
  3. Step 3: Cross multiply
    144,387.36x = 199,201.68 × 87,039.36
  4. Step 4: Simplify right side
    144,387.36x = 17,338,386,738.12
  5. Step 5: Solve for x
    x = 17,338,386,738.12/144,387.36
  6. Step 6: Final answer
    x = 120,082.44

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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.