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Finding the Fourth Proportional to 203,434.80, 304,941.60 and 91,168.80

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Solution

The fourth proportional to 203,434.80, 304,941.60 and 91,168.80 is: 136,658.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,434.80 : 304,941.60 = 91,168.80 : x
  2. Step 2: Convert to fraction form
    203,434.80/304,941.60 = 91,168.80/x
  3. Step 3: Cross multiply
    203,434.80x = 304,941.60 × 91,168.80
  4. Step 4: Simplify right side
    203,434.80x = 27,801,159,742.08
  5. Step 5: Solve for x
    x = 27,801,159,742.08/203,434.80
  6. Step 6: Final answer
    x = 136,658.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.