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Finding the Fourth Proportional to 155,465.28, 214,542.06 and 88,397.28

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Solution

The fourth proportional to 155,465.28, 214,542.06 and 88,397.28 is: 121,988.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,465.28 : 214,542.06 = 88,397.28 : x
  2. Step 2: Convert to fraction form
    155,465.28/214,542.06 = 88,397.28/x
  3. Step 3: Cross multiply
    155,465.28x = 214,542.06 × 88,397.28
  4. Step 4: Simplify right side
    155,465.28x = 18,964,934,549.60
  5. Step 5: Solve for x
    x = 18,964,934,549.60/155,465.28
  6. Step 6: Final answer
    x = 121,988.23

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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.