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Finding the Fourth Proportional to 191,332.60, 286,843.38 and 66,761.08

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Solution

The fourth proportional to 191,332.60, 286,843.38 and 66,761.08 is: 100,087.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,332.60 : 286,843.38 = 66,761.08 : x
  2. Step 2: Convert to fraction form
    191,332.60/286,843.38 = 66,761.08/x
  3. Step 3: Cross multiply
    191,332.60x = 286,843.38 × 66,761.08
  4. Step 4: Simplify right side
    191,332.60x = 19,149,973,839.65
  5. Step 5: Solve for x
    x = 19,149,973,839.65/191,332.60
  6. Step 6: Final answer
    x = 100,087.35

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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.