Home / 81,158.76-121,413.18-70,184.04

Finding the Fourth Proportional to 81,158.76, 121,413.18 and 70,184.04

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Solution

The fourth proportional to 81,158.76, 121,413.18 and 70,184.04 is: 104,995.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,158.76 : 121,413.18 = 70,184.04 : x
  2. Step 2: Convert to fraction form
    81,158.76/121,413.18 = 70,184.04/x
  3. Step 3: Cross multiply
    81,158.76x = 121,413.18 × 70,184.04
  4. Step 4: Simplify right side
    81,158.76x = 8,521,267,481.65
  5. Step 5: Solve for x
    x = 8,521,267,481.65/81,158.76
  6. Step 6: Final answer
    x = 104,995.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.