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Finding the Fourth Proportional to 202,989.50, 280,126.04 and 112,351.71

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Solution

The fourth proportional to 202,989.50, 280,126.04 and 112,351.71 is: 155,045.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,989.50 : 280,126.04 = 112,351.71 : x
  2. Step 2: Convert to fraction form
    202,989.50/280,126.04 = 112,351.71/x
  3. Step 3: Cross multiply
    202,989.50x = 280,126.04 × 112,351.71
  4. Step 4: Simplify right side
    202,989.50x = 31,472,639,047.77
  5. Step 5: Solve for x
    x = 31,472,639,047.77/202,989.50
  6. Step 6: Final answer
    x = 155,045.65

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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.