Home / 141,389.13-195,120.73-77,728.53

Finding the Fourth Proportional to 141,389.13, 195,120.73 and 77,728.53

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Solution

The fourth proportional to 141,389.13, 195,120.73 and 77,728.53 is: 107,267.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,389.13 : 195,120.73 = 77,728.53 : x
  2. Step 2: Convert to fraction form
    141,389.13/195,120.73 = 77,728.53/x
  3. Step 3: Cross multiply
    141,389.13x = 195,120.73 × 77,728.53
  4. Step 4: Simplify right side
    141,389.13x = 15,166,448,198.55
  5. Step 5: Solve for x
    x = 15,166,448,198.55/141,389.13
  6. Step 6: Final answer
    x = 107,267.42

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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.