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Finding the Fourth Proportional to 123,398.33, 170,316.01 and 84,689.11

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Solution

The fourth proportional to 123,398.33, 170,316.01 and 84,689.11 is: 116,889.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,398.33 : 170,316.01 = 84,689.11 : x
  2. Step 2: Convert to fraction form
    123,398.33/170,316.01 = 84,689.11/x
  3. Step 3: Cross multiply
    123,398.33x = 170,316.01 × 84,689.11
  4. Step 4: Simplify right side
    123,398.33x = 14,423,911,305.65
  5. Step 5: Solve for x
    x = 14,423,911,305.65/123,398.33
  6. Step 6: Final answer
    x = 116,889.03

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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.