Home / 90,745.20-136,117.80-88,995.60

Finding the Fourth Proportional to 90,745.20, 136,117.80 and 88,995.60

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Solution

The fourth proportional to 90,745.20, 136,117.80 and 88,995.60 is: 133,493.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,745.20 : 136,117.80 = 88,995.60 : x
  2. Step 2: Convert to fraction form
    90,745.20/136,117.80 = 88,995.60/x
  3. Step 3: Cross multiply
    90,745.20x = 136,117.80 × 88,995.60
  4. Step 4: Simplify right side
    90,745.20x = 12,113,885,281.68
  5. Step 5: Solve for x
    x = 12,113,885,281.68/90,745.20
  6. Step 6: Final answer
    x = 133,493.40

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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.