Home / 156,211.80-215,519.38-102,491.80

Finding the Fourth Proportional to 156,211.80, 215,519.38 and 102,491.80

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Solution

The fourth proportional to 156,211.80, 215,519.38 and 102,491.80 is: 141,403.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,211.80 : 215,519.38 = 102,491.80 : x
  2. Step 2: Convert to fraction form
    156,211.80/215,519.38 = 102,491.80/x
  3. Step 3: Cross multiply
    156,211.80x = 215,519.38 × 102,491.80
  4. Step 4: Simplify right side
    156,211.80x = 22,088,969,191.08
  5. Step 5: Solve for x
    x = 22,088,969,191.08/156,211.80
  6. Step 6: Final answer
    x = 141,403.97

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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.