Home / 140,382.79-193,728.35-76,720.59

Finding the Fourth Proportional to 140,382.79, 193,728.35 and 76,720.59

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Solution

The fourth proportional to 140,382.79, 193,728.35 and 76,720.59 is: 105,874.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,382.79 : 193,728.35 = 76,720.59 : x
  2. Step 2: Convert to fraction form
    140,382.79/193,728.35 = 76,720.59/x
  3. Step 3: Cross multiply
    140,382.79x = 193,728.35 × 76,720.59
  4. Step 4: Simplify right side
    140,382.79x = 14,862,953,503.53
  5. Step 5: Solve for x
    x = 14,862,953,503.53/140,382.79
  6. Step 6: Final answer
    x = 105,874.47

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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.