Home / 131,282.60-196,664.70-78,535.40

Finding the Fourth Proportional to 131,282.60, 196,664.70 and 78,535.40

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Solution

The fourth proportional to 131,282.60, 196,664.70 and 78,535.40 is: 117,648.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,282.60 : 196,664.70 = 78,535.40 : x
  2. Step 2: Convert to fraction form
    131,282.60/196,664.70 = 78,535.40/x
  3. Step 3: Cross multiply
    131,282.60x = 196,664.70 × 78,535.40
  4. Step 4: Simplify right side
    131,282.60x = 15,445,140,880.38
  5. Step 5: Solve for x
    x = 15,445,140,880.38/131,282.60
  6. Step 6: Final answer
    x = 117,648.04

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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.