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Finding the Fourth Proportional to 156,370.60, 215,791.59 and 84,750.40

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Solution

The fourth proportional to 156,370.60, 215,791.59 and 84,750.40 is: 116,955.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,370.60 : 215,791.59 = 84,750.40 : x
  2. Step 2: Convert to fraction form
    156,370.60/215,791.59 = 84,750.40/x
  3. Step 3: Cross multiply
    156,370.60x = 215,791.59 × 84,750.40
  4. Step 4: Simplify right side
    156,370.60x = 18,288,423,569.14
  5. Step 5: Solve for x
    x = 18,288,423,569.14/156,370.60
  6. Step 6: Final answer
    x = 116,955.64

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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.