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Finding the Fourth Proportional to 118,692, 163,795.32 and 64,977.48

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Solution

The fourth proportional to 118,692, 163,795.32 and 64,977.48 is: 89,669.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,692 : 163,795.32 = 64,977.48 : x
  2. Step 2: Convert to fraction form
    118,692/163,795.32 = 64,977.48/x
  3. Step 3: Cross multiply
    118,692x = 163,795.32 × 64,977.48
  4. Step 4: Simplify right side
    118,692x = 10,643,007,129.39
  5. Step 5: Solve for x
    x = 10,643,007,129.39/118,692
  6. Step 6: Final answer
    x = 89,669.12

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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.