Home / 90,746.10-136,119.15-69,726.60

Finding the Fourth Proportional to 90,746.10, 136,119.15 and 69,726.60

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Solution

The fourth proportional to 90,746.10, 136,119.15 and 69,726.60 is: 104,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,746.10 : 136,119.15 = 69,726.60 : x
  2. Step 2: Convert to fraction form
    90,746.10/136,119.15 = 69,726.60/x
  3. Step 3: Cross multiply
    90,746.10x = 136,119.15 × 69,726.60
  4. Step 4: Simplify right side
    90,746.10x = 9,491,125,524.39
  5. Step 5: Solve for x
    x = 9,491,125,524.39/90,746.10
  6. Step 6: Final answer
    x = 104,589.90

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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.