Home / 145,266.78-200,486.85-81,604.62

Finding the Fourth Proportional to 145,266.78, 200,486.85 and 81,604.62

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Solution

The fourth proportional to 145,266.78, 200,486.85 and 81,604.62 is: 112,624.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,266.78 : 200,486.85 = 81,604.62 : x
  2. Step 2: Convert to fraction form
    145,266.78/200,486.85 = 81,604.62/x
  3. Step 3: Cross multiply
    145,266.78x = 200,486.85 × 81,604.62
  4. Step 4: Simplify right side
    145,266.78x = 16,360,653,209.25
  5. Step 5: Solve for x
    x = 16,360,653,209.25/145,266.78
  6. Step 6: Final answer
    x = 112,624.88

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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.