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Finding the Fourth Proportional to 159,532.25, 220,155.95 and 87,914.84

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Solution

The fourth proportional to 159,532.25, 220,155.95 and 87,914.84 is: 121,323.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,532.25 : 220,155.95 = 87,914.84 : x
  2. Step 2: Convert to fraction form
    159,532.25/220,155.95 = 87,914.84/x
  3. Step 3: Cross multiply
    159,532.25x = 220,155.95 × 87,914.84
  4. Step 4: Simplify right side
    159,532.25x = 19,354,974,238.31
  5. Step 5: Solve for x
    x = 19,354,974,238.31/159,532.25
  6. Step 6: Final answer
    x = 121,323.27

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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.