Home / 121,282.56-181,620-76,775.04

Finding the Fourth Proportional to 121,282.56, 181,620 and 76,775.04

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Solution

The fourth proportional to 121,282.56, 181,620 and 76,775.04 is: 114,970.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,282.56 : 181,620 = 76,775.04 : x
  2. Step 2: Convert to fraction form
    121,282.56/181,620 = 76,775.04/x
  3. Step 3: Cross multiply
    121,282.56x = 181,620 × 76,775.04
  4. Step 4: Simplify right side
    121,282.56x = 13,943,882,764.80
  5. Step 5: Solve for x
    x = 13,943,882,764.80/121,282.56
  6. Step 6: Final answer
    x = 114,970.22

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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.