Home / 145,401.32-200,638.52-80,860.10

Finding the Fourth Proportional to 145,401.32, 200,638.52 and 80,860.10

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Solution

The fourth proportional to 145,401.32, 200,638.52 and 80,860.10 is: 111,578.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,401.32 : 200,638.52 = 80,860.10 : x
  2. Step 2: Convert to fraction form
    145,401.32/200,638.52 = 80,860.10/x
  3. Step 3: Cross multiply
    145,401.32x = 200,638.52 × 80,860.10
  4. Step 4: Simplify right side
    145,401.32x = 16,223,650,791.05
  5. Step 5: Solve for x
    x = 16,223,650,791.05/145,401.32
  6. Step 6: Final answer
    x = 111,578.43

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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.