Home / 141,398.75-195,131.60-77,737

Finding the Fourth Proportional to 141,398.75, 195,131.60 and 77,737

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Solution

The fourth proportional to 141,398.75, 195,131.60 and 77,737 is: 107,277.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,398.75 : 195,131.60 = 77,737 : x
  2. Step 2: Convert to fraction form
    141,398.75/195,131.60 = 77,737/x
  3. Step 3: Cross multiply
    141,398.75x = 195,131.60 × 77,737
  4. Step 4: Simplify right side
    141,398.75x = 15,168,945,189.20
  5. Step 5: Solve for x
    x = 15,168,945,189.20/141,398.75
  6. Step 6: Final answer
    x = 107,277.79

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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.