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Finding the Fourth Proportional to 155,465.40, 214,542.24 and 88,397.40

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Solution

The fourth proportional to 155,465.40, 214,542.24 and 88,397.40 is: 121,988.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,465.40 : 214,542.24 = 88,397.40 : x
  2. Step 2: Convert to fraction form
    155,465.40/214,542.24 = 88,397.40/x
  3. Step 3: Cross multiply
    155,465.40x = 214,542.24 × 88,397.40
  4. Step 4: Simplify right side
    155,465.40x = 18,964,976,206.18
  5. Step 5: Solve for x
    x = 18,964,976,206.18/155,465.40
  6. Step 6: Final answer
    x = 121,988.41

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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.