Home / 141,667.72-195,499.38-78,003.88

Finding the Fourth Proportional to 141,667.72, 195,499.38 and 78,003.88

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Solution

The fourth proportional to 141,667.72, 195,499.38 and 78,003.88 is: 107,644.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,667.72 : 195,499.38 = 78,003.88 : x
  2. Step 2: Convert to fraction form
    141,667.72/195,499.38 = 78,003.88/x
  3. Step 3: Cross multiply
    141,667.72x = 195,499.38 × 78,003.88
  4. Step 4: Simplify right side
    141,667.72x = 15,249,710,177.59
  5. Step 5: Solve for x
    x = 15,249,710,177.59/141,667.72
  6. Step 6: Final answer
    x = 107,644.21

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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.