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Finding the Fourth Proportional to 159,382.88, 219,948.37 and 87,762.72

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Solution

The fourth proportional to 159,382.88, 219,948.37 and 87,762.72 is: 121,112.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,382.88 : 219,948.37 = 87,762.72 : x
  2. Step 2: Convert to fraction form
    159,382.88/219,948.37 = 87,762.72/x
  3. Step 3: Cross multiply
    159,382.88x = 219,948.37 × 87,762.72
  4. Step 4: Simplify right side
    159,382.88x = 19,303,267,210.77
  5. Step 5: Solve for x
    x = 19,303,267,210.77/159,382.88
  6. Step 6: Final answer
    x = 121,112.55

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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.