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Finding the Fourth Proportional to 156,364.26, 215,769.69 and 88,387.26

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Solution

The fourth proportional to 156,364.26, 215,769.69 and 88,387.26 is: 121,967.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,364.26 : 215,769.69 = 88,387.26 : x
  2. Step 2: Convert to fraction form
    156,364.26/215,769.69 = 88,387.26/x
  3. Step 3: Cross multiply
    156,364.26x = 215,769.69 × 88,387.26
  4. Step 4: Simplify right side
    156,364.26x = 19,071,291,690.15
  5. Step 5: Solve for x
    x = 19,071,291,690.15/156,364.26
  6. Step 6: Final answer
    x = 121,967.08

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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.