Home / 121,287.35-181,931.03-115,844.15

Finding the Fourth Proportional to 121,287.35, 181,931.03 and 115,844.15

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Solution

The fourth proportional to 121,287.35, 181,931.03 and 115,844.15 is: 173,766.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,287.35 : 181,931.03 = 115,844.15 : x
  2. Step 2: Convert to fraction form
    121,287.35/181,931.03 = 115,844.15/x
  3. Step 3: Cross multiply
    121,287.35x = 181,931.03 × 115,844.15
  4. Step 4: Simplify right side
    121,287.35x = 21,075,644,949.75
  5. Step 5: Solve for x
    x = 21,075,644,949.75/121,287.35
  6. Step 6: Final answer
    x = 173,766.23

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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.