Home / 90,968.40-136,286.34-65,946.42

Finding the Fourth Proportional to 90,968.40, 136,286.34 and 65,946.42

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Solution

The fourth proportional to 90,968.40, 136,286.34 and 65,946.42 is: 98,799.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,968.40 : 136,286.34 = 65,946.42 : x
  2. Step 2: Convert to fraction form
    90,968.40/136,286.34 = 65,946.42/x
  3. Step 3: Cross multiply
    90,968.40x = 136,286.34 × 65,946.42
  4. Step 4: Simplify right side
    90,968.40x = 8,987,596,217.90
  5. Step 5: Solve for x
    x = 8,987,596,217.90/90,968.40
  6. Step 6: Final answer
    x = 98,799.10

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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.