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Finding the Fourth Proportional to 118,377, 163,365.12 and 68,076

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Solution

The fourth proportional to 118,377, 163,365.12 and 68,076 is: 93,947.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,377 : 163,365.12 = 68,076 : x
  2. Step 2: Convert to fraction form
    118,377/163,365.12 = 68,076/x
  3. Step 3: Cross multiply
    118,377x = 163,365.12 × 68,076
  4. Step 4: Simplify right side
    118,377x = 11,121,243,909.12
  5. Step 5: Solve for x
    x = 11,121,243,909.12/118,377
  6. Step 6: Final answer
    x = 93,947.67

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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.