Home / 131,921.56-197,914.86-38,428.12

Finding the Fourth Proportional to 131,921.56, 197,914.86 and 38,428.12

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Solution

The fourth proportional to 131,921.56, 197,914.86 and 38,428.12 is: 57,651.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,921.56 : 197,914.86 = 38,428.12 : x
  2. Step 2: Convert to fraction form
    131,921.56/197,914.86 = 38,428.12/x
  3. Step 3: Cross multiply
    131,921.56x = 197,914.86 × 38,428.12
  4. Step 4: Simplify right side
    131,921.56x = 7,605,495,989.86
  5. Step 5: Solve for x
    x = 7,605,495,989.86/131,921.56
  6. Step 6: Final answer
    x = 57,651.65

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1.5x scale

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.