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Finding the Fourth Proportional to 117,603.36, 162,293.76 and 63,888.78

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Solution

The fourth proportional to 117,603.36, 162,293.76 and 63,888.78 is: 88,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,603.36 : 162,293.76 = 63,888.78 : x
  2. Step 2: Convert to fraction form
    117,603.36/162,293.76 = 63,888.78/x
  3. Step 3: Cross multiply
    117,603.36x = 162,293.76 × 63,888.78
  4. Step 4: Simplify right side
    117,603.36x = 10,368,750,328.01
  5. Step 5: Solve for x
    x = 10,368,750,328.01/117,603.36
  6. Step 6: Final answer
    x = 88,167.13

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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.