Home / 103,703,764.40-155,456,113.80-80,661,921.20

Finding the Fourth Proportional to 103,703,764.40, 155,456,113.80 and 80,661,921.20

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Solution

The fourth proportional to 103,703,764.40, 155,456,113.80 and 80,661,921.20 is: 120,915,464.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703,764.40 : 155,456,113.80 = 80,661,921.20 : x
  2. Step 2: Convert to fraction form
    103,703,764.40/155,456,113.80 = 80,661,921.20/x
  3. Step 3: Cross multiply
    103,703,764.40x = 155,456,113.80 × 80,661,921.20
  4. Step 4: Simplify right side
    103,703,764.40x = 12,539,388,801,393,834
  5. Step 5: Solve for x
    x = 12,539,388,801,393,834/103,703,764.40
  6. Step 6: Final answer
    x = 120,915,464.10

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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.