Home / 131,035.10-196,552.65-81,430.70

Finding the Fourth Proportional to 131,035.10, 196,552.65 and 81,430.70

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Solution

The fourth proportional to 131,035.10, 196,552.65 and 81,430.70 is: 122,146.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,035.10 : 196,552.65 = 81,430.70 : x
  2. Step 2: Convert to fraction form
    131,035.10/196,552.65 = 81,430.70/x
  3. Step 3: Cross multiply
    131,035.10x = 196,552.65 × 81,430.70
  4. Step 4: Simplify right side
    131,035.10x = 16,005,419,876.36
  5. Step 5: Solve for x
    x = 16,005,419,876.36/131,035.10
  6. Step 6: Final answer
    x = 122,146.05

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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.