Home / 113,156.22-156,138.24-65,400.36

Finding the Fourth Proportional to 113,156.22, 156,138.24 and 65,400.36

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Solution

The fourth proportional to 113,156.22, 156,138.24 and 65,400.36 is: 90,242.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,156.22 : 156,138.24 = 65,400.36 : x
  2. Step 2: Convert to fraction form
    113,156.22/156,138.24 = 65,400.36/x
  3. Step 3: Cross multiply
    113,156.22x = 156,138.24 × 65,400.36
  4. Step 4: Simplify right side
    113,156.22x = 10,211,497,105.77
  5. Step 5: Solve for x
    x = 10,211,497,105.77/113,156.22
  6. Step 6: Final answer
    x = 90,242.47

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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.