Home / 90,894.20-136,207.65-65,986.70

Finding the Fourth Proportional to 90,894.20, 136,207.65 and 65,986.70

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Solution

The fourth proportional to 90,894.20, 136,207.65 and 65,986.70 is: 98,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,894.20 : 136,207.65 = 65,986.70 : x
  2. Step 2: Convert to fraction form
    90,894.20/136,207.65 = 65,986.70/x
  3. Step 3: Cross multiply
    90,894.20x = 136,207.65 × 65,986.70
  4. Step 4: Simplify right side
    90,894.20x = 8,987,893,338.26
  5. Step 5: Solve for x
    x = 8,987,893,338.26/90,894.20
  6. Step 6: Final answer
    x = 98,883.02

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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.