Home / 126,908.70-190,363.05-87,510.30

Finding the Fourth Proportional to 126,908.70, 190,363.05 and 87,510.30

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Solution

The fourth proportional to 126,908.70, 190,363.05 and 87,510.30 is: 131,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,908.70 : 190,363.05 = 87,510.30 : x
  2. Step 2: Convert to fraction form
    126,908.70/190,363.05 = 87,510.30/x
  3. Step 3: Cross multiply
    126,908.70x = 190,363.05 × 87,510.30
  4. Step 4: Simplify right side
    126,908.70x = 16,658,727,614.42
  5. Step 5: Solve for x
    x = 16,658,727,614.42/126,908.70
  6. Step 6: Final answer
    x = 131,265.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.