Home / 145,404.32-200,642.66-80,863.10

Finding the Fourth Proportional to 145,404.32, 200,642.66 and 80,863.10

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Solution

The fourth proportional to 145,404.32, 200,642.66 and 80,863.10 is: 111,582.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,404.32 : 200,642.66 = 80,863.10 : x
  2. Step 2: Convert to fraction form
    145,404.32/200,642.66 = 80,863.10/x
  3. Step 3: Cross multiply
    145,404.32x = 200,642.66 × 80,863.10
  4. Step 4: Simplify right side
    145,404.32x = 16,224,587,479.85
  5. Step 5: Solve for x
    x = 16,224,587,479.85/145,404.32
  6. Step 6: Final answer
    x = 111,582.57

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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.