Home / 113,540.61-156,686.09-65,821.62

Finding the Fourth Proportional to 113,540.61, 156,686.09 and 65,821.62

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Solution

The fourth proportional to 113,540.61, 156,686.09 and 65,821.62 is: 90,833.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,540.61 : 156,686.09 = 65,821.62 : x
  2. Step 2: Convert to fraction form
    113,540.61/156,686.09 = 65,821.62/x
  3. Step 3: Cross multiply
    113,540.61x = 156,686.09 × 65,821.62
  4. Step 4: Simplify right side
    113,540.61x = 10,313,331,946.16
  5. Step 5: Solve for x
    x = 10,313,331,946.16/113,540.61
  6. Step 6: Final answer
    x = 90,833.86

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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.