Home / 149,420,591.40-206,121,999.06-121,574,443.80

Finding the Fourth Proportional to 149,420,591.40, 206,121,999.06 and 121,574,443.80

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Solution

The fourth proportional to 149,420,591.40, 206,121,999.06 and 121,574,443.80 is: 167,708,929.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,420,591.40 : 206,121,999.06 = 121,574,443.80 : x
  2. Step 2: Convert to fraction form
    149,420,591.40/206,121,999.06 = 121,574,443.80/x
  3. Step 3: Cross multiply
    149,420,591.40x = 206,121,999.06 × 121,574,443.80
  4. Step 4: Simplify right side
    149,420,591.40x = 25,059,167,390,663,624
  5. Step 5: Solve for x
    x = 25,059,167,390,663,624/149,420,591.40
  6. Step 6: Final answer
    x = 167,708,929.24

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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.