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Finding the Fourth Proportional to 159,566.84, 220,214.90 and 87,959.60

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Solution

The fourth proportional to 159,566.84, 220,214.90 and 87,959.60 is: 121,391.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,566.84 : 220,214.90 = 87,959.60 : x
  2. Step 2: Convert to fraction form
    159,566.84/220,214.90 = 87,959.60/x
  3. Step 3: Cross multiply
    159,566.84x = 220,214.90 × 87,959.60
  4. Step 4: Simplify right side
    159,566.84x = 19,370,014,518.04
  5. Step 5: Solve for x
    x = 19,370,014,518.04/159,566.84
  6. Step 6: Final answer
    x = 121,391.23

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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.