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Finding the Fourth Proportional to 179,600, 247,870.50 and 103,143.08

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Solution

The fourth proportional to 179,600, 247,870.50 and 103,143.08 is: 142,350.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,600 : 247,870.50 = 103,143.08 : x
  2. Step 2: Convert to fraction form
    179,600/247,870.50 = 103,143.08/x
  3. Step 3: Cross multiply
    179,600x = 247,870.50 × 103,143.08
  4. Step 4: Simplify right side
    179,600x = 25,566,126,811.14
  5. Step 5: Solve for x
    x = 25,566,126,811.14/179,600
  6. Step 6: Final answer
    x = 142,350.37

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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.