Home / 145,046.70-217,570.05-91,902.60

Finding the Fourth Proportional to 145,046.70, 217,570.05 and 91,902.60

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Solution

The fourth proportional to 145,046.70, 217,570.05 and 91,902.60 is: 137,853.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,046.70 : 217,570.05 = 91,902.60 : x
  2. Step 2: Convert to fraction form
    145,046.70/217,570.05 = 91,902.60/x
  3. Step 3: Cross multiply
    145,046.70x = 217,570.05 × 91,902.60
  4. Step 4: Simplify right side
    145,046.70x = 19,995,253,277.13
  5. Step 5: Solve for x
    x = 19,995,253,277.13/145,046.70
  6. Step 6: Final answer
    x = 137,853.90

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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.