Home / 91,914,734.80-137,872,102.20-84,899,713.60

Finding the Fourth Proportional to 91,914,734.80, 137,872,102.20 and 84,899,713.60

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Solution

The fourth proportional to 91,914,734.80, 137,872,102.20 and 84,899,713.60 is: 127,349,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,914,734.80 : 137,872,102.20 = 84,899,713.60 : x
  2. Step 2: Convert to fraction form
    91,914,734.80/137,872,102.20 = 84,899,713.60/x
  3. Step 3: Cross multiply
    91,914,734.80x = 137,872,102.20 × 84,899,713.60
  4. Step 4: Simplify right side
    91,914,734.80x = 11,705,301,990,209,928
  5. Step 5: Solve for x
    x = 11,705,301,990,209,928/91,914,734.80
  6. Step 6: Final answer
    x = 127,349,570.40

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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.