Home / 91,984.40-137,868.60-90,999.44

Finding the Fourth Proportional to 91,984.40, 137,868.60 and 90,999.44

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Solution

The fourth proportional to 91,984.40, 137,868.60 and 90,999.44 is: 136,392.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,984.40 : 137,868.60 = 90,999.44 : x
  2. Step 2: Convert to fraction form
    91,984.40/137,868.60 = 90,999.44/x
  3. Step 3: Cross multiply
    91,984.40x = 137,868.60 × 90,999.44
  4. Step 4: Simplify right side
    91,984.40x = 12,545,965,393.58
  5. Step 5: Solve for x
    x = 12,545,965,393.58/91,984.40
  6. Step 6: Final answer
    x = 136,392.32

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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.