Home / 124,779.14-172,146.38-76,949.46

Finding the Fourth Proportional to 124,779.14, 172,146.38 and 76,949.46

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Solution

The fourth proportional to 124,779.14, 172,146.38 and 76,949.46 is: 106,160.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,779.14 : 172,146.38 = 76,949.46 : x
  2. Step 2: Convert to fraction form
    124,779.14/172,146.38 = 76,949.46/x
  3. Step 3: Cross multiply
    124,779.14x = 172,146.38 × 76,949.46
  4. Step 4: Simplify right side
    124,779.14x = 13,246,570,981.95
  5. Step 5: Solve for x
    x = 13,246,570,981.95/124,779.14
  6. Step 6: Final answer
    x = 106,160.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.