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Finding the Fourth Proportional to 119,758.88, 165,266.40 and 66,046.08

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Solution

The fourth proportional to 119,758.88, 165,266.40 and 66,046.08 is: 91,143.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,758.88 : 165,266.40 = 66,046.08 : x
  2. Step 2: Convert to fraction form
    119,758.88/165,266.40 = 66,046.08/x
  3. Step 3: Cross multiply
    119,758.88x = 165,266.40 × 66,046.08
  4. Step 4: Simplify right side
    119,758.88x = 10,915,197,875.71
  5. Step 5: Solve for x
    x = 10,915,197,875.71/119,758.88
  6. Step 6: Final answer
    x = 91,143.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.