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Finding the Fourth Proportional to 203,491.02, 280,831.98 and 112,855.65

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Solution

The fourth proportional to 203,491.02, 280,831.98 and 112,855.65 is: 155,748.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,491.02 : 280,831.98 = 112,855.65 : x
  2. Step 2: Convert to fraction form
    203,491.02/280,831.98 = 112,855.65/x
  3. Step 3: Cross multiply
    203,491.02x = 280,831.98 × 112,855.65
  4. Step 4: Simplify right side
    203,491.02x = 31,693,475,643.69
  5. Step 5: Solve for x
    x = 31,693,475,643.69/203,491.02
  6. Step 6: Final answer
    x = 155,748.77

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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.