Home / 103,321.39-142,588.26-57,381.25

Finding the Fourth Proportional to 103,321.39, 142,588.26 and 57,381.25

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Solution

The fourth proportional to 103,321.39, 142,588.26 and 57,381.25 is: 79,188.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,321.39 : 142,588.26 = 57,381.25 : x
  2. Step 2: Convert to fraction form
    103,321.39/142,588.26 = 57,381.25/x
  3. Step 3: Cross multiply
    103,321.39x = 142,588.26 × 57,381.25
  4. Step 4: Simplify right side
    103,321.39x = 8,181,891,737.73
  5. Step 5: Solve for x
    x = 8,181,891,737.73/103,321.39
  6. Step 6: Final answer
    x = 79,188.75

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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.