Home / 120,117.91-165,761.79-69,140.65

Finding the Fourth Proportional to 120,117.91, 165,761.79 and 69,140.65

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Solution

The fourth proportional to 120,117.91, 165,761.79 and 69,140.65 is: 95,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,117.91 : 165,761.79 = 69,140.65 : x
  2. Step 2: Convert to fraction form
    120,117.91/165,761.79 = 69,140.65/x
  3. Step 3: Cross multiply
    120,117.91x = 165,761.79 × 69,140.65
  4. Step 4: Simplify right side
    120,117.91x = 11,460,877,905.76
  5. Step 5: Solve for x
    x = 11,460,877,905.76/120,117.91
  6. Step 6: Final answer
    x = 95,413.56

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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.