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Finding the Fourth Proportional to 159,162.65, 219,644.49 and 87,547.51

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Solution

The fourth proportional to 159,162.65, 219,644.49 and 87,547.51 is: 120,815.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,162.65 : 219,644.49 = 87,547.51 : x
  2. Step 2: Convert to fraction form
    159,162.65/219,644.49 = 87,547.51/x
  3. Step 3: Cross multiply
    159,162.65x = 219,644.49 × 87,547.51
  4. Step 4: Simplify right side
    159,162.65x = 19,229,328,184.72
  5. Step 5: Solve for x
    x = 19,229,328,184.72/159,162.65
  6. Step 6: Final answer
    x = 120,815.58

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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.