Home / 90,775.20-136,308.60-68,613.60

Finding the Fourth Proportional to 90,775.20, 136,308.60 and 68,613.60

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Solution

The fourth proportional to 90,775.20, 136,308.60 and 68,613.60 is: 103,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,775.20 : 136,308.60 = 68,613.60 : x
  2. Step 2: Convert to fraction form
    90,775.20/136,308.60 = 68,613.60/x
  3. Step 3: Cross multiply
    90,775.20x = 136,308.60 × 68,613.60
  4. Step 4: Simplify right side
    90,775.20x = 9,352,623,756.96
  5. Step 5: Solve for x
    x = 9,352,623,756.96/90,775.20
  6. Step 6: Final answer
    x = 103,030.60

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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.