Home / 112,981.92-169,503.60-39,115.68

Finding the Fourth Proportional to 112,981.92, 169,503.60 and 39,115.68

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Solution

The fourth proportional to 112,981.92, 169,503.60 and 39,115.68 is: 58,684.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,981.92 : 169,503.60 = 39,115.68 : x
  2. Step 2: Convert to fraction form
    112,981.92/169,503.60 = 39,115.68/x
  3. Step 3: Cross multiply
    112,981.92x = 169,503.60 × 39,115.68
  4. Step 4: Simplify right side
    112,981.92x = 6,630,248,576.45
  5. Step 5: Solve for x
    x = 6,630,248,576.45/112,981.92
  6. Step 6: Final answer
    x = 58,684.16

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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.