Home / 121,146.30-181,549.34-103,284.58

Finding the Fourth Proportional to 121,146.30, 181,549.34 and 103,284.58

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Solution

The fourth proportional to 121,146.30, 181,549.34 and 103,284.58 is: 154,781.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,146.30 : 181,549.34 = 103,284.58 : x
  2. Step 2: Convert to fraction form
    121,146.30/181,549.34 = 103,284.58/x
  3. Step 3: Cross multiply
    121,146.30x = 181,549.34 × 103,284.58
  4. Step 4: Simplify right side
    121,146.30x = 18,751,247,331.18
  5. Step 5: Solve for x
    x = 18,751,247,331.18/121,146.30
  6. Step 6: Final answer
    x = 154,781.84

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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.