Home / 207,541.18-311,120.34-81,267.45

Finding the Fourth Proportional to 207,541.18, 311,120.34 and 81,267.45

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Solution

The fourth proportional to 207,541.18, 311,120.34 and 81,267.45 is: 121,826.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,541.18 : 311,120.34 = 81,267.45 : x
  2. Step 2: Convert to fraction form
    207,541.18/311,120.34 = 81,267.45/x
  3. Step 3: Cross multiply
    207,541.18x = 311,120.34 × 81,267.45
  4. Step 4: Simplify right side
    207,541.18x = 25,283,956,674.93
  5. Step 5: Solve for x
    x = 25,283,956,674.93/207,541.18
  6. Step 6: Final answer
    x = 121,826.22

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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.