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Finding the Fourth Proportional to 159,220.40, 219,725.89 and 86,623.70

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Solution

The fourth proportional to 159,220.40, 219,725.89 and 86,623.70 is: 119,541.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,220.40 : 219,725.89 = 86,623.70 : x
  2. Step 2: Convert to fraction form
    159,220.40/219,725.89 = 86,623.70/x
  3. Step 3: Cross multiply
    159,220.40x = 219,725.89 × 86,623.70
  4. Step 4: Simplify right side
    159,220.40x = 19,033,469,577.59
  5. Step 5: Solve for x
    x = 19,033,469,577.59/159,220.40
  6. Step 6: Final answer
    x = 119,541.65

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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.