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Finding the Fourth Proportional to 134,000.80, 200,828.40 and 81,354.40

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Solution

The fourth proportional to 134,000.80, 200,828.40 and 81,354.40 is: 121,926.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,000.80 : 200,828.40 = 81,354.40 : x
  2. Step 2: Convert to fraction form
    134,000.80/200,828.40 = 81,354.40/x
  3. Step 3: Cross multiply
    134,000.80x = 200,828.40 × 81,354.40
  4. Step 4: Simplify right side
    134,000.80x = 16,338,273,984.96
  5. Step 5: Solve for x
    x = 16,338,273,984.96/134,000.80
  6. Step 6: Final answer
    x = 121,926.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.