Home / 218,126.12-301,009.70-121,327.88

Finding the Fourth Proportional to 218,126.12, 301,009.70 and 121,327.88

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Solution

The fourth proportional to 218,126.12, 301,009.70 and 121,327.88 is: 167,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,126.12 : 301,009.70 = 121,327.88 : x
  2. Step 2: Convert to fraction form
    218,126.12/301,009.70 = 121,327.88/x
  3. Step 3: Cross multiply
    218,126.12x = 301,009.70 × 121,327.88
  4. Step 4: Simplify right side
    218,126.12x = 36,520,868,153.80
  5. Step 5: Solve for x
    x = 36,520,868,153.80/218,126.12
  6. Step 6: Final answer
    x = 167,430.05

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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.