Home / 105,681.40-158,542.80-39,122.08

Finding the Fourth Proportional to 105,681.40, 158,542.80 and 39,122.08

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Solution

The fourth proportional to 105,681.40, 158,542.80 and 39,122.08 is: 58,690.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,681.40 : 158,542.80 = 39,122.08 : x
  2. Step 2: Convert to fraction form
    105,681.40/158,542.80 = 39,122.08/x
  3. Step 3: Cross multiply
    105,681.40x = 158,542.80 × 39,122.08
  4. Step 4: Simplify right side
    105,681.40x = 6,202,524,105.02
  5. Step 5: Solve for x
    x = 6,202,524,105.02/105,681.40
  6. Step 6: Final answer
    x = 58,690.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.