Home / 148,669.28-205,165.13-80,686.84

Finding the Fourth Proportional to 148,669.28, 205,165.13 and 80,686.84

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Solution

The fourth proportional to 148,669.28, 205,165.13 and 80,686.84 is: 111,348.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,669.28 : 205,165.13 = 80,686.84 : x
  2. Step 2: Convert to fraction form
    148,669.28/205,165.13 = 80,686.84/x
  3. Step 3: Cross multiply
    148,669.28x = 205,165.13 × 80,686.84
  4. Step 4: Simplify right side
    148,669.28x = 16,554,124,992.06
  5. Step 5: Solve for x
    x = 16,554,124,992.06/148,669.28
  6. Step 6: Final answer
    x = 111,348.66

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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.