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Finding the Fourth Proportional to 156,370.71, 215,791.45 and 84,750.71

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Solution

The fourth proportional to 156,370.71, 215,791.45 and 84,750.71 is: 116,955.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,370.71 : 215,791.45 = 84,750.71 : x
  2. Step 2: Convert to fraction form
    156,370.71/215,791.45 = 84,750.71/x
  3. Step 3: Cross multiply
    156,370.71x = 215,791.45 × 84,750.71
  4. Step 4: Simplify right side
    156,370.71x = 18,288,478,927.03
  5. Step 5: Solve for x
    x = 18,288,478,927.03/156,370.71
  6. Step 6: Final answer
    x = 116,955.91

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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.