Home / 141,643.92-195,464.80-77,982.18

Finding the Fourth Proportional to 141,643.92, 195,464.80 and 77,982.18

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Solution

The fourth proportional to 141,643.92, 195,464.80 and 77,982.18 is: 107,613.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,643.92 : 195,464.80 = 77,982.18 : x
  2. Step 2: Convert to fraction form
    141,643.92/195,464.80 = 77,982.18/x
  3. Step 3: Cross multiply
    141,643.92x = 195,464.80 × 77,982.18
  4. Step 4: Simplify right side
    141,643.92x = 15,242,771,217.26
  5. Step 5: Solve for x
    x = 15,242,771,217.26/141,643.92
  6. Step 6: Final answer
    x = 107,613.31

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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.