Home / 147,689.40-221,534.10-131,359.80

Finding the Fourth Proportional to 147,689.40, 221,534.10 and 131,359.80

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Solution

The fourth proportional to 147,689.40, 221,534.10 and 131,359.80 is: 197,039.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,689.40 : 221,534.10 = 131,359.80 : x
  2. Step 2: Convert to fraction form
    147,689.40/221,534.10 = 131,359.80/x
  3. Step 3: Cross multiply
    147,689.40x = 221,534.10 × 131,359.80
  4. Step 4: Simplify right side
    147,689.40x = 29,100,675,069.18
  5. Step 5: Solve for x
    x = 29,100,675,069.18/147,689.40
  6. Step 6: Final answer
    x = 197,039.70

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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.