Home / 105,721.68-158,475.04-66,306.24

Finding the Fourth Proportional to 105,721.68, 158,475.04 and 66,306.24

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Solution

The fourth proportional to 105,721.68, 158,475.04 and 66,306.24 is: 99,391.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,721.68 : 158,475.04 = 66,306.24 : x
  2. Step 2: Convert to fraction form
    105,721.68/158,475.04 = 66,306.24/x
  3. Step 3: Cross multiply
    105,721.68x = 158,475.04 × 66,306.24
  4. Step 4: Simplify right side
    105,721.68x = 10,507,884,036.25
  5. Step 5: Solve for x
    x = 10,507,884,036.25/105,721.68
  6. Step 6: Final answer
    x = 99,391.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.