Home / 121,027.20-181,322.10-98,719.80

Finding the Fourth Proportional to 121,027.20, 181,322.10 and 98,719.80

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Solution

The fourth proportional to 121,027.20, 181,322.10 and 98,719.80 is: 147,901.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,027.20 : 181,322.10 = 98,719.80 : x
  2. Step 2: Convert to fraction form
    121,027.20/181,322.10 = 98,719.80/x
  3. Step 3: Cross multiply
    121,027.20x = 181,322.10 × 98,719.80
  4. Step 4: Simplify right side
    121,027.20x = 17,900,081,447.58
  5. Step 5: Solve for x
    x = 17,900,081,447.58/121,027.20
  6. Step 6: Final answer
    x = 147,901.31

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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.