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Finding the Fourth Proportional to 123,641.79, 170,623.65 and 69,924.79

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Solution

The fourth proportional to 123,641.79, 170,623.65 and 69,924.79 is: 96,495.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,641.79 : 170,623.65 = 69,924.79 : x
  2. Step 2: Convert to fraction form
    123,641.79/170,623.65 = 69,924.79/x
  3. Step 3: Cross multiply
    123,641.79x = 170,623.65 × 69,924.79
  4. Step 4: Simplify right side
    123,641.79x = 11,930,822,895.28
  5. Step 5: Solve for x
    x = 11,930,822,895.28/123,641.79
  6. Step 6: Final answer
    x = 96,495.07

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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.