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Finding the Fourth Proportional to 117,678.68, 162,397.68 and 63,963.82

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Solution

The fourth proportional to 117,678.68, 162,397.68 and 63,963.82 is: 88,270.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,678.68 : 162,397.68 = 63,963.82 : x
  2. Step 2: Convert to fraction form
    117,678.68/162,397.68 = 63,963.82/x
  3. Step 3: Cross multiply
    117,678.68x = 162,397.68 × 63,963.82
  4. Step 4: Simplify right side
    117,678.68x = 10,387,575,971.94
  5. Step 5: Solve for x
    x = 10,387,575,971.94/117,678.68
  6. Step 6: Final answer
    x = 88,270.67

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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.