Home / 119,862.72-165,403.08-66,147.66

Finding the Fourth Proportional to 119,862.72, 165,403.08 and 66,147.66

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Solution

The fourth proportional to 119,862.72, 165,403.08 and 66,147.66 is: 91,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,862.72 : 165,403.08 = 66,147.66 : x
  2. Step 2: Convert to fraction form
    119,862.72/165,403.08 = 66,147.66/x
  3. Step 3: Cross multiply
    119,862.72x = 165,403.08 × 66,147.66
  4. Step 4: Simplify right side
    119,862.72x = 10,941,026,698.79
  5. Step 5: Solve for x
    x = 10,941,026,698.79/119,862.72
  6. Step 6: Final answer
    x = 91,279.65

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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.