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Finding the Fourth Proportional to 123,999.57, 171,108.45 and 68,810.31

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Solution

The fourth proportional to 123,999.57, 171,108.45 and 68,810.31 is: 94,952.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,999.57 : 171,108.45 = 68,810.31 : x
  2. Step 2: Convert to fraction form
    123,999.57/171,108.45 = 68,810.31/x
  3. Step 3: Cross multiply
    123,999.57x = 171,108.45 × 68,810.31
  4. Step 4: Simplify right side
    123,999.57x = 11,774,025,488.12
  5. Step 5: Solve for x
    x = 11,774,025,488.12/123,999.57
  6. Step 6: Final answer
    x = 94,952.15

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1.5x scale

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.