Home / 141,975.80-195,925.32-78,314.12

Finding the Fourth Proportional to 141,975.80, 195,925.32 and 78,314.12

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Solution

The fourth proportional to 141,975.80, 195,925.32 and 78,314.12 is: 108,072.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,975.80 : 195,925.32 = 78,314.12 : x
  2. Step 2: Convert to fraction form
    141,975.80/195,925.32 = 78,314.12/x
  3. Step 3: Cross multiply
    141,975.80x = 195,925.32 × 78,314.12
  4. Step 4: Simplify right side
    141,975.80x = 15,343,719,021.52
  5. Step 5: Solve for x
    x = 15,343,719,021.52/141,975.80
  6. Step 6: Final answer
    x = 108,072.78

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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.