Home / 71,287.20-106,930.80-70,877.60

Finding the Fourth Proportional to 71,287.20, 106,930.80 and 70,877.60

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Solution

The fourth proportional to 71,287.20, 106,930.80 and 70,877.60 is: 106,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,287.20 : 106,930.80 = 70,877.60 : x
  2. Step 2: Convert to fraction form
    71,287.20/106,930.80 = 70,877.60/x
  3. Step 3: Cross multiply
    71,287.20x = 106,930.80 × 70,877.60
  4. Step 4: Simplify right side
    71,287.20x = 7,578,998,470.08
  5. Step 5: Solve for x
    x = 7,578,998,470.08/71,287.20
  6. Step 6: Final answer
    x = 106,316.40

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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.