Home / 91,438.19-126,189.45-51,152.61

Finding the Fourth Proportional to 91,438.19, 126,189.45 and 51,152.61

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Solution

The fourth proportional to 91,438.19, 126,189.45 and 51,152.61 is: 70,593.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,438.19 : 126,189.45 = 51,152.61 : x
  2. Step 2: Convert to fraction form
    91,438.19/126,189.45 = 51,152.61/x
  3. Step 3: Cross multiply
    91,438.19x = 126,189.45 × 51,152.61
  4. Step 4: Simplify right side
    91,438.19x = 6,454,919,721.96
  5. Step 5: Solve for x
    x = 6,454,919,721.96/91,438.19
  6. Step 6: Final answer
    x = 70,593.26

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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.