Home / 156,100.18-215,417.49-84,480.10

Finding the Fourth Proportional to 156,100.18, 215,417.49 and 84,480.10

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Solution

The fourth proportional to 156,100.18, 215,417.49 and 84,480.10 is: 116,582.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,100.18 : 215,417.49 = 84,480.10 : x
  2. Step 2: Convert to fraction form
    156,100.18/215,417.49 = 84,480.10/x
  3. Step 3: Cross multiply
    156,100.18x = 215,417.49 × 84,480.10
  4. Step 4: Simplify right side
    156,100.18x = 18,198,491,096.95
  5. Step 5: Solve for x
    x = 18,198,491,096.95/156,100.18
  6. Step 6: Final answer
    x = 116,582.13

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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.