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Finding the Fourth Proportional to 117,294.65, 162,001.15 and 77,187.47

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Solution

The fourth proportional to 117,294.65, 162,001.15 and 77,187.47 is: 106,607.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,294.65 : 162,001.15 = 77,187.47 : x
  2. Step 2: Convert to fraction form
    117,294.65/162,001.15 = 77,187.47/x
  3. Step 3: Cross multiply
    117,294.65x = 162,001.15 × 77,187.47
  4. Step 4: Simplify right side
    117,294.65x = 12,504,458,061.64
  5. Step 5: Solve for x
    x = 12,504,458,061.64/117,294.65
  6. Step 6: Final answer
    x = 106,607.23

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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.