Home / 100,872,002.80-151,308,004.20-91,784,361.70

Finding the Fourth Proportional to 100,872,002.80, 151,308,004.20 and 91,784,361.70

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Solution

The fourth proportional to 100,872,002.80, 151,308,004.20 and 91,784,361.70 is: 137,676,542.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,872,002.80 : 151,308,004.20 = 91,784,361.70 : x
  2. Step 2: Convert to fraction form
    100,872,002.80/151,308,004.20 = 91,784,361.70/x
  3. Step 3: Cross multiply
    100,872,002.80x = 151,308,004.20 × 91,784,361.70
  4. Step 4: Simplify right side
    100,872,002.80x = 13,887,708,585,597,918
  5. Step 5: Solve for x
    x = 13,887,708,585,597,918/100,872,002.80
  6. Step 6: Final answer
    x = 137,676,542.55

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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.