Home / 140,145.32-193,395.66-79,711.40

Finding the Fourth Proportional to 140,145.32, 193,395.66 and 79,711.40

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Solution

The fourth proportional to 140,145.32, 193,395.66 and 79,711.40 is: 109,998.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,145.32 : 193,395.66 = 79,711.40 : x
  2. Step 2: Convert to fraction form
    140,145.32/193,395.66 = 79,711.40/x
  3. Step 3: Cross multiply
    140,145.32x = 193,395.66 × 79,711.40
  4. Step 4: Simplify right side
    140,145.32x = 15,415,838,812.52
  5. Step 5: Solve for x
    x = 15,415,838,812.52/140,145.32
  6. Step 6: Final answer
    x = 109,998.96

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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.