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Finding the Fourth Proportional to 115,178.40, 172,671.60 and 48,669.60

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Solution

The fourth proportional to 115,178.40, 172,671.60 and 48,669.60 is: 72,963.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,178.40 : 172,671.60 = 48,669.60 : x
  2. Step 2: Convert to fraction form
    115,178.40/172,671.60 = 48,669.60/x
  3. Step 3: Cross multiply
    115,178.40x = 172,671.60 × 48,669.60
  4. Step 4: Simplify right side
    115,178.40x = 8,403,857,703.36
  5. Step 5: Solve for x
    x = 8,403,857,703.36/115,178.40
  6. Step 6: Final answer
    x = 72,963.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.