Home / 156,360.38-215,800.50-99,005.05

Finding the Fourth Proportional to 156,360.38, 215,800.50 and 99,005.05

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Solution

The fourth proportional to 156,360.38, 215,800.50 and 99,005.05 is: 136,641.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,360.38 : 215,800.50 = 99,005.05 : x
  2. Step 2: Convert to fraction form
    156,360.38/215,800.50 = 99,005.05/x
  3. Step 3: Cross multiply
    156,360.38x = 215,800.50 × 99,005.05
  4. Step 4: Simplify right side
    156,360.38x = 21,365,339,933.54
  5. Step 5: Solve for x
    x = 21,365,339,933.54/156,360.38
  6. Step 6: Final answer
    x = 136,641.65

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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.