Home / 113,469.30-156,655.17-100,857.60

Finding the Fourth Proportional to 113,469.30, 156,655.17 and 100,857.60

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Solution

The fourth proportional to 113,469.30, 156,655.17 and 100,857.60 is: 139,243.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,469.30 : 156,655.17 = 100,857.60 : x
  2. Step 2: Convert to fraction form
    113,469.30/156,655.17 = 100,857.60/x
  3. Step 3: Cross multiply
    113,469.30x = 156,655.17 × 100,857.60
  4. Step 4: Simplify right side
    113,469.30x = 15,799,864,473.79
  5. Step 5: Solve for x
    x = 15,799,864,473.79/113,469.30
  6. Step 6: Final answer
    x = 139,243.52

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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.