Home / 133,965.18-184,787.85-79,478.78

Finding the Fourth Proportional to 133,965.18, 184,787.85 and 79,478.78

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Solution

The fourth proportional to 133,965.18, 184,787.85 and 79,478.78 is: 109,630.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,965.18 : 184,787.85 = 79,478.78 : x
  2. Step 2: Convert to fraction form
    133,965.18/184,787.85 = 79,478.78/x
  3. Step 3: Cross multiply
    133,965.18x = 184,787.85 × 79,478.78
  4. Step 4: Simplify right side
    133,965.18x = 14,686,712,876.82
  5. Step 5: Solve for x
    x = 14,686,712,876.82/133,965.18
  6. Step 6: Final answer
    x = 109,630.82

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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.