Home / 146,820.80-220,304.10-83,689.40

Finding the Fourth Proportional to 146,820.80, 220,304.10 and 83,689.40

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Solution

The fourth proportional to 146,820.80, 220,304.10 and 83,689.40 is: 125,575.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,820.80 : 220,304.10 = 83,689.40 : x
  2. Step 2: Convert to fraction form
    146,820.80/220,304.10 = 83,689.40/x
  3. Step 3: Cross multiply
    146,820.80x = 220,304.10 × 83,689.40
  4. Step 4: Simplify right side
    146,820.80x = 18,437,117,946.54
  5. Step 5: Solve for x
    x = 18,437,117,946.54/146,820.80
  6. Step 6: Final answer
    x = 125,575.65

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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.