Home / 145,401.33-200,638.53-80,860.11

Finding the Fourth Proportional to 145,401.33, 200,638.53 and 80,860.11

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Solution

The fourth proportional to 145,401.33, 200,638.53 and 80,860.11 is: 111,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,401.33 : 200,638.53 = 80,860.11 : x
  2. Step 2: Convert to fraction form
    145,401.33/200,638.53 = 80,860.11/x
  3. Step 3: Cross multiply
    145,401.33x = 200,638.53 × 80,860.11
  4. Step 4: Simplify right side
    145,401.33x = 16,223,653,606.04
  5. Step 5: Solve for x
    x = 16,223,653,606.04/145,401.33
  6. Step 6: Final answer
    x = 111,578.44

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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.