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Finding the Fourth Proportional to 156,291.06, 215,680.80 and 84,672.48

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Solution

The fourth proportional to 156,291.06, 215,680.80 and 84,672.48 is: 116,847.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,291.06 : 215,680.80 = 84,672.48 : x
  2. Step 2: Convert to fraction form
    156,291.06/215,680.80 = 84,672.48/x
  3. Step 3: Cross multiply
    156,291.06x = 215,680.80 × 84,672.48
  4. Step 4: Simplify right side
    156,291.06x = 18,262,228,224.38
  5. Step 5: Solve for x
    x = 18,262,228,224.38/156,291.06
  6. Step 6: Final answer
    x = 116,847.55

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1.5x scale

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.