Home / 140,301.23-193,612.55-76,639.28

Finding the Fourth Proportional to 140,301.23, 193,612.55 and 76,639.28

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Solution

The fourth proportional to 140,301.23, 193,612.55 and 76,639.28 is: 105,760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,301.23 : 193,612.55 = 76,639.28 : x
  2. Step 2: Convert to fraction form
    140,301.23/193,612.55 = 76,639.28/x
  3. Step 3: Cross multiply
    140,301.23x = 193,612.55 × 76,639.28
  4. Step 4: Simplify right side
    140,301.23x = 14,838,325,079.70
  5. Step 5: Solve for x
    x = 14,838,325,079.70/140,301.23
  6. Step 6: Final answer
    x = 105,760.48

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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.