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Finding the Fourth Proportional to 192,036.57, 288,088.97 and 65,690.79

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Solution

The fourth proportional to 192,036.57, 288,088.97 and 65,690.79 is: 98,547.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,036.57 : 288,088.97 = 65,690.79 : x
  2. Step 2: Convert to fraction form
    192,036.57/288,088.97 = 65,690.79/x
  3. Step 3: Cross multiply
    192,036.57x = 288,088.97 × 65,690.79
  4. Step 4: Simplify right side
    192,036.57x = 18,924,791,701.13
  5. Step 5: Solve for x
    x = 18,924,791,701.13/192,036.57
  6. Step 6: Final answer
    x = 98,547.85

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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.