Home / 78,610.20-117,915.30-70,834.20

Finding the Fourth Proportional to 78,610.20, 117,915.30 and 70,834.20

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Solution

The fourth proportional to 78,610.20, 117,915.30 and 70,834.20 is: 106,251.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,610.20 : 117,915.30 = 70,834.20 : x
  2. Step 2: Convert to fraction form
    78,610.20/117,915.30 = 70,834.20/x
  3. Step 3: Cross multiply
    78,610.20x = 117,915.30 × 70,834.20
  4. Step 4: Simplify right side
    78,610.20x = 8,352,435,943.26
  5. Step 5: Solve for x
    x = 8,352,435,943.26/78,610.20
  6. Step 6: Final answer
    x = 106,251.30

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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.