Home / 148,890.90-205,478.55-85,227.18

Finding the Fourth Proportional to 148,890.90, 205,478.55 and 85,227.18

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Solution

The fourth proportional to 148,890.90, 205,478.55 and 85,227.18 is: 117,618.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,890.90 : 205,478.55 = 85,227.18 : x
  2. Step 2: Convert to fraction form
    148,890.90/205,478.55 = 85,227.18/x
  3. Step 3: Cross multiply
    148,890.90x = 205,478.55 × 85,227.18
  4. Step 4: Simplify right side
    148,890.90x = 17,512,357,366.99
  5. Step 5: Solve for x
    x = 17,512,357,366.99/148,890.90
  6. Step 6: Final answer
    x = 117,618.72

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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.