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Finding the Fourth Proportional to 155,842.86, 215,063.18 and 88,774.86

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Solution

The fourth proportional to 155,842.86, 215,063.18 and 88,774.86 is: 122,509.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,842.86 : 215,063.18 = 88,774.86 : x
  2. Step 2: Convert to fraction form
    155,842.86/215,063.18 = 88,774.86/x
  3. Step 3: Cross multiply
    155,842.86x = 215,063.18 × 88,774.86
  4. Step 4: Simplify right side
    155,842.86x = 19,092,203,695.65
  5. Step 5: Solve for x
    x = 19,092,203,695.65/155,842.86
  6. Step 6: Final answer
    x = 122,509.33

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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.