Home / 131,845.10-197,680.29-72,709.10

Finding the Fourth Proportional to 131,845.10, 197,680.29 and 72,709.10

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Solution

The fourth proportional to 131,845.10, 197,680.29 and 72,709.10 is: 109,015.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,845.10 : 197,680.29 = 72,709.10 : x
  2. Step 2: Convert to fraction form
    131,845.10/197,680.29 = 72,709.10/x
  3. Step 3: Cross multiply
    131,845.10x = 197,680.29 × 72,709.10
  4. Step 4: Simplify right side
    131,845.10x = 14,373,155,973.64
  5. Step 5: Solve for x
    x = 14,373,155,973.64/131,845.10
  6. Step 6: Final answer
    x = 109,015.47

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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.