Home / 90,853.20-136,360.80-53,366.40

Finding the Fourth Proportional to 90,853.20, 136,360.80 and 53,366.40

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Solution

The fourth proportional to 90,853.20, 136,360.80 and 53,366.40 is: 80,097.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,853.20 : 136,360.80 = 53,366.40 : x
  2. Step 2: Convert to fraction form
    90,853.20/136,360.80 = 53,366.40/x
  3. Step 3: Cross multiply
    90,853.20x = 136,360.80 × 53,366.40
  4. Step 4: Simplify right side
    90,853.20x = 7,277,084,997.12
  5. Step 5: Solve for x
    x = 7,277,084,997.12/90,853.20
  6. Step 6: Final answer
    x = 80,097.18

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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.