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Finding the Fourth Proportional to 143,543.52, 198,087.12 and 89,858.14

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Solution

The fourth proportional to 143,543.52, 198,087.12 and 89,858.14 is: 124,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,543.52 : 198,087.12 = 89,858.14 : x
  2. Step 2: Convert to fraction form
    143,543.52/198,087.12 = 89,858.14/x
  3. Step 3: Cross multiply
    143,543.52x = 198,087.12 × 89,858.14
  4. Step 4: Simplify right side
    143,543.52x = 17,799,740,161.16
  5. Step 5: Solve for x
    x = 17,799,740,161.16/143,543.52
  6. Step 6: Final answer
    x = 124,002.39

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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.