Home / 98,143.11-147,200.49-31,574.61

Finding the Fourth Proportional to 98,143.11, 147,200.49 and 31,574.61

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Solution

The fourth proportional to 98,143.11, 147,200.49 and 31,574.61 is: 47,357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,143.11 : 147,200.49 = 31,574.61 : x
  2. Step 2: Convert to fraction form
    98,143.11/147,200.49 = 31,574.61/x
  3. Step 3: Cross multiply
    98,143.11x = 147,200.49 × 31,574.61
  4. Step 4: Simplify right side
    98,143.11x = 4,647,798,063.56
  5. Step 5: Solve for x
    x = 4,647,798,063.56/98,143.11
  6. Step 6: Final answer
    x = 47,357.35

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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.