Home / 105,545.38-145,645.95-57,799.30

Finding the Fourth Proportional to 105,545.38, 145,645.95 and 57,799.30

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Solution

The fourth proportional to 105,545.38, 145,645.95 and 57,799.30 is: 79,759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,545.38 : 145,645.95 = 57,799.30 : x
  2. Step 2: Convert to fraction form
    105,545.38/145,645.95 = 57,799.30/x
  3. Step 3: Cross multiply
    105,545.38x = 145,645.95 × 57,799.30
  4. Step 4: Simplify right side
    105,545.38x = 8,418,233,957.84
  5. Step 5: Solve for x
    x = 8,418,233,957.84/105,545.38
  6. Step 6: Final answer
    x = 79,759.38

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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.