Home / 131,312.88-196,901.28-78,027.84

Finding the Fourth Proportional to 131,312.88, 196,901.28 and 78,027.84

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Solution

The fourth proportional to 131,312.88, 196,901.28 and 78,027.84 is: 117,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,312.88 : 196,901.28 = 78,027.84 : x
  2. Step 2: Convert to fraction form
    131,312.88/196,901.28 = 78,027.84/x
  3. Step 3: Cross multiply
    131,312.88x = 196,901.28 × 78,027.84
  4. Step 4: Simplify right side
    131,312.88x = 15,363,781,571.64
  5. Step 5: Solve for x
    x = 15,363,781,571.64/131,312.88
  6. Step 6: Final answer
    x = 117,001.33

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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.