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Finding the Fourth Proportional to 148,693.88, 205,197.75 and 80,710.88

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Solution

The fourth proportional to 148,693.88, 205,197.75 and 80,710.88 is: 111,381.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,693.88 : 205,197.75 = 80,710.88 : x
  2. Step 2: Convert to fraction form
    148,693.88/205,197.75 = 80,710.88/x
  3. Step 3: Cross multiply
    148,693.88x = 205,197.75 × 80,710.88
  4. Step 4: Simplify right side
    148,693.88x = 16,561,689,950.53
  5. Step 5: Solve for x
    x = 16,561,689,950.53/148,693.88
  6. Step 6: Final answer
    x = 111,381.11

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1.5x scale

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.