Home / 91,729.40-137,594.10-84,512.30

Finding the Fourth Proportional to 91,729.40, 137,594.10 and 84,512.30

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Solution

The fourth proportional to 91,729.40, 137,594.10 and 84,512.30 is: 126,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,729.40 : 137,594.10 = 84,512.30 : x
  2. Step 2: Convert to fraction form
    91,729.40/137,594.10 = 84,512.30/x
  3. Step 3: Cross multiply
    91,729.40x = 137,594.10 × 84,512.30
  4. Step 4: Simplify right side
    91,729.40x = 11,628,393,857.43
  5. Step 5: Solve for x
    x = 11,628,393,857.43/91,729.40
  6. Step 6: Final answer
    x = 126,768.45

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1.5x scale

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.