Home / 220,051,421.40-329,867,180.10-81,840,019.80

Finding the Fourth Proportional to 220,051,421.40, 329,867,180.10 and 81,840,019.80

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Solution

The fourth proportional to 220,051,421.40, 329,867,180.10 and 81,840,019.80 is: 122,681,945.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,051,421.40 : 329,867,180.10 = 81,840,019.80 : x
  2. Step 2: Convert to fraction form
    220,051,421.40/329,867,180.10 = 81,840,019.80/x
  3. Step 3: Cross multiply
    220,051,421.40x = 329,867,180.10 × 81,840,019.80
  4. Step 4: Simplify right side
    220,051,421.40x = 26,996,336,550,754,168
  5. Step 5: Solve for x
    x = 26,996,336,550,754,168/220,051,421.40
  6. Step 6: Final answer
    x = 122,681,945.79

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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.