Home / 120,160.82-165,815.28-66,442.29

Finding the Fourth Proportional to 120,160.82, 165,815.28 and 66,442.29

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Solution

The fourth proportional to 120,160.82, 165,815.28 and 66,442.29 is: 91,686.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,160.82 : 165,815.28 = 66,442.29 : x
  2. Step 2: Convert to fraction form
    120,160.82/165,815.28 = 66,442.29/x
  3. Step 3: Cross multiply
    120,160.82x = 165,815.28 × 66,442.29
  4. Step 4: Simplify right side
    120,160.82x = 11,017,146,920.19
  5. Step 5: Solve for x
    x = 11,017,146,920.19/120,160.82
  6. Step 6: Final answer
    x = 91,686.69

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1.5x scale

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.