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Finding the Fourth Proportional to 119,979, 165,571.02 and 69,681.24

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Solution

The fourth proportional to 119,979, 165,571.02 and 69,681.24 is: 96,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,979 : 165,571.02 = 69,681.24 : x
  2. Step 2: Convert to fraction form
    119,979/165,571.02 = 69,681.24/x
  3. Step 3: Cross multiply
    119,979x = 165,571.02 × 69,681.24
  4. Step 4: Simplify right side
    119,979x = 11,537,193,981.66
  5. Step 5: Solve for x
    x = 11,537,193,981.66/119,979
  6. Step 6: Final answer
    x = 96,160.11

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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.