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Finding the Fourth Proportional to 202,689.99, 279,708.06 and 112,049.77

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Solution

The fourth proportional to 202,689.99, 279,708.06 and 112,049.77 is: 154,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,689.99 : 279,708.06 = 112,049.77 : x
  2. Step 2: Convert to fraction form
    202,689.99/279,708.06 = 112,049.77/x
  3. Step 3: Cross multiply
    202,689.99x = 279,708.06 × 112,049.77
  4. Step 4: Simplify right side
    202,689.99x = 31,341,223,790.15
  5. Step 5: Solve for x
    x = 31,341,223,790.15/202,689.99
  6. Step 6: Final answer
    x = 154,626.40

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1.5x scale

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.