Home / 156,262.80-215,627.22-87,339.36

Finding the Fourth Proportional to 156,262.80, 215,627.22 and 87,339.36

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Solution

The fourth proportional to 156,262.80, 215,627.22 and 87,339.36 is: 120,519.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,262.80 : 215,627.22 = 87,339.36 : x
  2. Step 2: Convert to fraction form
    156,262.80/215,627.22 = 87,339.36/x
  3. Step 3: Cross multiply
    156,262.80x = 215,627.22 × 87,339.36
  4. Step 4: Simplify right side
    156,262.80x = 18,832,743,393.38
  5. Step 5: Solve for x
    x = 18,832,743,393.38/156,262.80
  6. Step 6: Final answer
    x = 120,519.68

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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.