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Finding the Fourth Proportional to 203,507.65, 280,857.81 and 112,892.81

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Solution

The fourth proportional to 203,507.65, 280,857.81 and 112,892.81 is: 155,801.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,507.65 : 280,857.81 = 112,892.81 : x
  2. Step 2: Convert to fraction form
    203,507.65/280,857.81 = 112,892.81/x
  3. Step 3: Cross multiply
    203,507.65x = 280,857.81 × 112,892.81
  4. Step 4: Simplify right side
    203,507.65x = 31,706,827,381.35
  5. Step 5: Solve for x
    x = 31,706,827,381.35/203,507.65
  6. Step 6: Final answer
    x = 155,801.65

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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.