Home / 90,772.20-136,158.30-76,948.20

Finding the Fourth Proportional to 90,772.20, 136,158.30 and 76,948.20

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Solution

The fourth proportional to 90,772.20, 136,158.30 and 76,948.20 is: 115,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,772.20 : 136,158.30 = 76,948.20 : x
  2. Step 2: Convert to fraction form
    90,772.20/136,158.30 = 76,948.20/x
  3. Step 3: Cross multiply
    90,772.20x = 136,158.30 × 76,948.20
  4. Step 4: Simplify right side
    90,772.20x = 10,477,136,100.06
  5. Step 5: Solve for x
    x = 10,477,136,100.06/90,772.20
  6. Step 6: Final answer
    x = 115,422.30

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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.