Home / 141,613.32-195,403.51-81,172.86

Finding the Fourth Proportional to 141,613.32, 195,403.51 and 81,172.86

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Solution

The fourth proportional to 141,613.32, 195,403.51 and 81,172.86 is: 112,005.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,613.32 : 195,403.51 = 81,172.86 : x
  2. Step 2: Convert to fraction form
    141,613.32/195,403.51 = 81,172.86/x
  3. Step 3: Cross multiply
    141,613.32x = 195,403.51 × 81,172.86
  4. Step 4: Simplify right side
    141,613.32x = 15,861,461,760.74
  5. Step 5: Solve for x
    x = 15,861,461,760.74/141,613.32
  6. Step 6: Final answer
    x = 112,005.44

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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.