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Finding the Fourth Proportional to 141,502.56, 195,268.74 and 77,839.80

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Solution

The fourth proportional to 141,502.56, 195,268.74 and 77,839.80 is: 107,416.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,502.56 : 195,268.74 = 77,839.80 : x
  2. Step 2: Convert to fraction form
    141,502.56/195,268.74 = 77,839.80/x
  3. Step 3: Cross multiply
    141,502.56x = 195,268.74 × 77,839.80
  4. Step 4: Simplify right side
    141,502.56x = 15,199,679,667.85
  5. Step 5: Solve for x
    x = 15,199,679,667.85/141,502.56
  6. Step 6: Final answer
    x = 107,416.29

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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.