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Finding the Fourth Proportional to 117,325.06, 161,866.16 and 77,060.65

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Solution

The fourth proportional to 117,325.06, 161,866.16 and 77,060.65 is: 106,315.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,325.06 : 161,866.16 = 77,060.65 : x
  2. Step 2: Convert to fraction form
    117,325.06/161,866.16 = 77,060.65/x
  3. Step 3: Cross multiply
    117,325.06x = 161,866.16 × 77,060.65
  4. Step 4: Simplify right side
    117,325.06x = 12,473,511,117.30
  5. Step 5: Solve for x
    x = 12,473,511,117.30/117,325.06
  6. Step 6: Final answer
    x = 106,315.83

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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.