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Finding the Fourth Proportional to 133,044.40, 199,566.60 and 85,805.20

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Solution

The fourth proportional to 133,044.40, 199,566.60 and 85,805.20 is: 128,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,044.40 : 199,566.60 = 85,805.20 : x
  2. Step 2: Convert to fraction form
    133,044.40/199,566.60 = 85,805.20/x
  3. Step 3: Cross multiply
    133,044.40x = 199,566.60 × 85,805.20
  4. Step 4: Simplify right side
    133,044.40x = 17,123,852,026.32
  5. Step 5: Solve for x
    x = 17,123,852,026.32/133,044.40
  6. Step 6: Final answer
    x = 128,707.80

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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.