Home / 643,121.66-964,673.14-156,805.76

Finding the Fourth Proportional to 643,121.66, 964,673.14 and 156,805.76

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Solution

The fourth proportional to 643,121.66, 964,673.14 and 156,805.76 is: 235,206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,121.66 : 964,673.14 = 156,805.76 : x
  2. Step 2: Convert to fraction form
    643,121.66/964,673.14 = 156,805.76/x
  3. Step 3: Cross multiply
    643,121.66x = 964,673.14 × 156,805.76
  4. Step 4: Simplify right side
    643,121.66x = 151,266,304,869.29
  5. Step 5: Solve for x
    x = 151,266,304,869.29/643,121.66
  6. Step 6: Final answer
    x = 235,206.36

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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.