Home / 148,663.18-205,155.35-80,680.19

Finding the Fourth Proportional to 148,663.18, 205,155.35 and 80,680.19

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Solution

The fourth proportional to 148,663.18, 205,155.35 and 80,680.19 is: 111,338.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,663.18 : 205,155.35 = 80,680.19 : x
  2. Step 2: Convert to fraction form
    148,663.18/205,155.35 = 80,680.19/x
  3. Step 3: Cross multiply
    148,663.18x = 205,155.35 × 80,680.19
  4. Step 4: Simplify right side
    148,663.18x = 16,551,971,490.89
  5. Step 5: Solve for x
    x = 16,551,971,490.89/148,663.18
  6. Step 6: Final answer
    x = 111,338.74

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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.