Home / 80,919,203.40-121,378,805.10-74,223,046.80

Finding the Fourth Proportional to 80,919,203.40, 121,378,805.10 and 74,223,046.80

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Solution

The fourth proportional to 80,919,203.40, 121,378,805.10 and 74,223,046.80 is: 111,334,570.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,203.40 : 121,378,805.10 = 74,223,046.80 : x
  2. Step 2: Convert to fraction form
    80,919,203.40/121,378,805.10 = 74,223,046.80/x
  3. Step 3: Cross multiply
    80,919,203.40x = 121,378,805.10 × 74,223,046.80
  4. Step 4: Simplify right side
    80,919,203.40x = 9,009,104,731,465,378
  5. Step 5: Solve for x
    x = 9,009,104,731,465,378/80,919,203.40
  6. Step 6: Final answer
    x = 111,334,570.20

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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.