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Finding the Fourth Proportional to 120,180.68, 165,863.76 and 69,879.68

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Solution

The fourth proportional to 120,180.68, 165,863.76 and 69,879.68 is: 96,442.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,180.68 : 165,863.76 = 69,879.68 : x
  2. Step 2: Convert to fraction form
    120,180.68/165,863.76 = 69,879.68/x
  3. Step 3: Cross multiply
    120,180.68x = 165,863.76 × 69,879.68
  4. Step 4: Simplify right side
    120,180.68x = 11,590,506,472.40
  5. Step 5: Solve for x
    x = 11,590,506,472.40/120,180.68
  6. Step 6: Final answer
    x = 96,442.34

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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.