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Finding the Fourth Proportional to 139,448.65, 209,186.79 and 44,655.04

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Solution

The fourth proportional to 139,448.65, 209,186.79 and 44,655.04 is: 66,986.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,448.65 : 209,186.79 = 44,655.04 : x
  2. Step 2: Convert to fraction form
    139,448.65/209,186.79 = 44,655.04/x
  3. Step 3: Cross multiply
    139,448.65x = 209,186.79 × 44,655.04
  4. Step 4: Simplify right side
    139,448.65x = 9,341,244,474.92
  5. Step 5: Solve for x
    x = 9,341,244,474.92/139,448.65
  6. Step 6: Final answer
    x = 66,986.98

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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.