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Finding the Fourth Proportional to 145,498.56, 200,757.60 and 81,839.04

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Solution

The fourth proportional to 145,498.56, 200,757.60 and 81,839.04 is: 112,920.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,498.56 : 200,757.60 = 81,839.04 : x
  2. Step 2: Convert to fraction form
    145,498.56/200,757.60 = 81,839.04/x
  3. Step 3: Cross multiply
    145,498.56x = 200,757.60 × 81,839.04
  4. Step 4: Simplify right side
    145,498.56x = 16,429,809,256.70
  5. Step 5: Solve for x
    x = 16,429,809,256.70/145,498.56
  6. Step 6: Final answer
    x = 112,920.77

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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.