Home / 149,516.16-206,328.24-81,534.96

Finding the Fourth Proportional to 149,516.16, 206,328.24 and 81,534.96

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Solution

The fourth proportional to 149,516.16, 206,328.24 and 81,534.96 is: 112,516.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,516.16 : 206,328.24 = 81,534.96 : x
  2. Step 2: Convert to fraction form
    149,516.16/206,328.24 = 81,534.96/x
  3. Step 3: Cross multiply
    149,516.16x = 206,328.24 × 81,534.96
  4. Step 4: Simplify right side
    149,516.16x = 16,822,964,795.27
  5. Step 5: Solve for x
    x = 16,822,964,795.27/149,516.16
  6. Step 6: Final answer
    x = 112,516.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.