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Finding the Fourth Proportional to 159,028.88, 219,460.17 and 86,432.18

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Solution

The fourth proportional to 159,028.88, 219,460.17 and 86,432.18 is: 119,276.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,028.88 : 219,460.17 = 86,432.18 : x
  2. Step 2: Convert to fraction form
    159,028.88/219,460.17 = 86,432.18/x
  3. Step 3: Cross multiply
    159,028.88x = 219,460.17 × 86,432.18
  4. Step 4: Simplify right side
    159,028.88x = 18,968,420,916.27
  5. Step 5: Solve for x
    x = 18,968,420,916.27/159,028.88
  6. Step 6: Final answer
    x = 119,276.58

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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.