Home / 156,780.28-216,273.85-99,318.22

Finding the Fourth Proportional to 156,780.28, 216,273.85 and 99,318.22

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Solution

The fourth proportional to 156,780.28, 216,273.85 and 99,318.22 is: 137,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,780.28 : 216,273.85 = 99,318.22 : x
  2. Step 2: Convert to fraction form
    156,780.28/216,273.85 = 99,318.22/x
  3. Step 3: Cross multiply
    156,780.28x = 216,273.85 × 99,318.22
  4. Step 4: Simplify right side
    156,780.28x = 21,479,933,814.55
  5. Step 5: Solve for x
    x = 21,479,933,814.55/156,780.28
  6. Step 6: Final answer
    x = 137,006.60

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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.