Home / 91,748.40-137,622.60-70,986.80

Finding the Fourth Proportional to 91,748.40, 137,622.60 and 70,986.80

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Solution

The fourth proportional to 91,748.40, 137,622.60 and 70,986.80 is: 106,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,748.40 : 137,622.60 = 70,986.80 : x
  2. Step 2: Convert to fraction form
    91,748.40/137,622.60 = 70,986.80/x
  3. Step 3: Cross multiply
    91,748.40x = 137,622.60 × 70,986.80
  4. Step 4: Simplify right side
    91,748.40x = 9,769,387,981.68
  5. Step 5: Solve for x
    x = 9,769,387,981.68/91,748.40
  6. Step 6: Final answer
    x = 106,480.20

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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.