Home / 218,570.46-301,632.28-121,780.72

Finding the Fourth Proportional to 218,570.46, 301,632.28 and 121,780.72

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Solution

The fourth proportional to 218,570.46, 301,632.28 and 121,780.72 is: 168,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,570.46 : 301,632.28 = 121,780.72 : x
  2. Step 2: Convert to fraction form
    218,570.46/301,632.28 = 121,780.72/x
  3. Step 3: Cross multiply
    218,570.46x = 301,632.28 × 121,780.72
  4. Step 4: Simplify right side
    218,570.46x = 36,732,996,306.23
  5. Step 5: Solve for x
    x = 36,732,996,306.23/218,570.46
  6. Step 6: Final answer
    x = 168,060.21

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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.