Home / 140,381.65-193,726.25-76,719.45

Finding the Fourth Proportional to 140,381.65, 193,726.25 and 76,719.45

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Solution

The fourth proportional to 140,381.65, 193,726.25 and 76,719.45 is: 105,872.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,381.65 : 193,726.25 = 76,719.45 : x
  2. Step 2: Convert to fraction form
    140,381.65/193,726.25 = 76,719.45/x
  3. Step 3: Cross multiply
    140,381.65x = 193,726.25 × 76,719.45
  4. Step 4: Simplify right side
    140,381.65x = 14,862,570,966.97
  5. Step 5: Solve for x
    x = 14,862,570,966.97/140,381.65
  6. Step 6: Final answer
    x = 105,872.60

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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.