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Finding the Fourth Proportional to 159,399.58, 219,969.25 and 90,488.45

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Solution

The fourth proportional to 159,399.58, 219,969.25 and 90,488.45 is: 124,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,399.58 : 219,969.25 = 90,488.45 : x
  2. Step 2: Convert to fraction form
    159,399.58/219,969.25 = 90,488.45/x
  3. Step 3: Cross multiply
    159,399.58x = 219,969.25 × 90,488.45
  4. Step 4: Simplify right side
    159,399.58x = 19,904,675,663.09
  5. Step 5: Solve for x
    x = 19,904,675,663.09/159,399.58
  6. Step 6: Final answer
    x = 124,872.83

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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.