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Finding the Fourth Proportional to 105,125.80, 145,092.41 and 62,687.07

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Solution

The fourth proportional to 105,125.80, 145,092.41 and 62,687.07 is: 86,519.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,125.80 : 145,092.41 = 62,687.07 : x
  2. Step 2: Convert to fraction form
    105,125.80/145,092.41 = 62,687.07/x
  3. Step 3: Cross multiply
    105,125.80x = 145,092.41 × 62,687.07
  4. Step 4: Simplify right side
    105,125.80x = 9,095,418,062.14
  5. Step 5: Solve for x
    x = 9,095,418,062.14/105,125.80
  6. Step 6: Final answer
    x = 86,519.37

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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.