Home / 120,616.76-180,890.58-40,646

Finding the Fourth Proportional to 120,616.76, 180,890.58 and 40,646

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Solution

The fourth proportional to 120,616.76, 180,890.58 and 40,646 is: 60,957.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,616.76 : 180,890.58 = 40,646 : x
  2. Step 2: Convert to fraction form
    120,616.76/180,890.58 = 40,646/x
  3. Step 3: Cross multiply
    120,616.76x = 180,890.58 × 40,646
  4. Step 4: Simplify right side
    120,616.76x = 7,352,478,514.68
  5. Step 5: Solve for x
    x = 7,352,478,514.68/120,616.76
  6. Step 6: Final answer
    x = 60,957.35

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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.