Home / 121,146.22-181,530.40-76,679.04

Finding the Fourth Proportional to 121,146.22, 181,530.40 and 76,679.04

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Solution

The fourth proportional to 121,146.22, 181,530.40 and 76,679.04 is: 114,898.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,146.22 : 181,530.40 = 76,679.04 : x
  2. Step 2: Convert to fraction form
    121,146.22/181,530.40 = 76,679.04/x
  3. Step 3: Cross multiply
    121,146.22x = 181,530.40 × 76,679.04
  4. Step 4: Simplify right side
    121,146.22x = 13,919,576,802.82
  5. Step 5: Solve for x
    x = 13,919,576,802.82/121,146.22
  6. Step 6: Final answer
    x = 114,898.98

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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.