Home / 111,331.71-153,841.19-81,064.31

Finding the Fourth Proportional to 111,331.71, 153,841.19 and 81,064.31

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Solution

The fourth proportional to 111,331.71, 153,841.19 and 81,064.31 is: 112,016.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,331.71 : 153,841.19 = 81,064.31 : x
  2. Step 2: Convert to fraction form
    111,331.71/153,841.19 = 81,064.31/x
  3. Step 3: Cross multiply
    111,331.71x = 153,841.19 × 81,064.31
  4. Step 4: Simplify right side
    111,331.71x = 12,471,028,742.40
  5. Step 5: Solve for x
    x = 12,471,028,742.40/111,331.71
  6. Step 6: Final answer
    x = 112,016.86

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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.