Home / 112,785.95-169,162.22-68,400.78

Finding the Fourth Proportional to 112,785.95, 169,162.22 and 68,400.78

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Solution

The fourth proportional to 112,785.95, 169,162.22 and 68,400.78 is: 102,591.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,785.95 : 169,162.22 = 68,400.78 : x
  2. Step 2: Convert to fraction form
    112,785.95/169,162.22 = 68,400.78/x
  3. Step 3: Cross multiply
    112,785.95x = 169,162.22 × 68,400.78
  4. Step 4: Simplify right side
    112,785.95x = 11,570,827,875.43
  5. Step 5: Solve for x
    x = 11,570,827,875.43/112,785.95
  6. Step 6: Final answer
    x = 102,591.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.