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Finding the Fourth Proportional to 133,069.65, 199,604.48 and 85,830.45

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Solution

The fourth proportional to 133,069.65, 199,604.48 and 85,830.45 is: 128,745.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,069.65 : 199,604.48 = 85,830.45 : x
  2. Step 2: Convert to fraction form
    133,069.65/199,604.48 = 85,830.45/x
  3. Step 3: Cross multiply
    133,069.65x = 199,604.48 × 85,830.45
  4. Step 4: Simplify right side
    133,069.65x = 17,132,141,911.26
  5. Step 5: Solve for x
    x = 17,132,141,911.26/133,069.65
  6. Step 6: Final answer
    x = 128,745.68

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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.