Home / 112,884.32-169,291.92-78,047.84

Finding the Fourth Proportional to 112,884.32, 169,291.92 and 78,047.84

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Solution

The fourth proportional to 112,884.32, 169,291.92 and 78,047.84 is: 117,047.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,884.32 : 169,291.92 = 78,047.84 : x
  2. Step 2: Convert to fraction form
    112,884.32/169,291.92 = 78,047.84/x
  3. Step 3: Cross multiply
    112,884.32x = 169,291.92 × 78,047.84
  4. Step 4: Simplify right side
    112,884.32x = 13,212,868,685.45
  5. Step 5: Solve for x
    x = 13,212,868,685.45/112,884.32
  6. Step 6: Final answer
    x = 117,047.87

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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.