Home / 156,154.43-215,493.80-84,534.45

Finding the Fourth Proportional to 156,154.43, 215,493.80 and 84,534.45

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Solution

The fourth proportional to 156,154.43, 215,493.80 and 84,534.45 is: 116,657.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,154.43 : 215,493.80 = 84,534.45 : x
  2. Step 2: Convert to fraction form
    156,154.43/215,493.80 = 84,534.45/x
  3. Step 3: Cross multiply
    156,154.43x = 215,493.80 × 84,534.45
  4. Step 4: Simplify right side
    156,154.43x = 18,216,649,438.74
  5. Step 5: Solve for x
    x = 18,216,649,438.74/156,154.43
  6. Step 6: Final answer
    x = 116,657.91

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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.