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Finding the Fourth Proportional to 159,745.50, 220,448.79 and 89,089.50

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Solution

The fourth proportional to 159,745.50, 220,448.79 and 89,089.50 is: 122,943.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,745.50 : 220,448.79 = 89,089.50 : x
  2. Step 2: Convert to fraction form
    159,745.50/220,448.79 = 89,089.50/x
  3. Step 3: Cross multiply
    159,745.50x = 220,448.79 × 89,089.50
  4. Step 4: Simplify right side
    159,745.50x = 19,639,672,476.71
  5. Step 5: Solve for x
    x = 19,639,672,476.71/159,745.50
  6. Step 6: Final answer
    x = 122,943.51

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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.