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Finding the Fourth Proportional to 155,169.90, 214,134.64 and 88,101.90

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Solution

The fourth proportional to 155,169.90, 214,134.64 and 88,101.90 is: 121,580.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,169.90 : 214,134.64 = 88,101.90 : x
  2. Step 2: Convert to fraction form
    155,169.90/214,134.64 = 88,101.90/x
  3. Step 3: Cross multiply
    155,169.90x = 214,134.64 × 88,101.90
  4. Step 4: Simplify right side
    155,169.90x = 18,865,668,639.82
  5. Step 5: Solve for x
    x = 18,865,668,639.82/155,169.90
  6. Step 6: Final answer
    x = 121,580.72

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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.