Home / 140,128.97-193,382.09-76,470.87

Finding the Fourth Proportional to 140,128.97, 193,382.09 and 76,470.87

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Solution

The fourth proportional to 140,128.97, 193,382.09 and 76,470.87 is: 105,532.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,128.97 : 193,382.09 = 76,470.87 : x
  2. Step 2: Convert to fraction form
    140,128.97/193,382.09 = 76,470.87/x
  3. Step 3: Cross multiply
    140,128.97x = 193,382.09 × 76,470.87
  4. Step 4: Simplify right side
    140,128.97x = 14,788,096,282.36
  5. Step 5: Solve for x
    x = 14,788,096,282.36/140,128.97
  6. Step 6: Final answer
    x = 105,532.05

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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.