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Finding the Fourth Proportional to 136,204.32, 203,869.53 and 72,866.01

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Solution

The fourth proportional to 136,204.32, 203,869.53 and 72,866.01 is: 109,065.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,204.32 : 203,869.53 = 72,866.01 : x
  2. Step 2: Convert to fraction form
    136,204.32/203,869.53 = 72,866.01/x
  3. Step 3: Cross multiply
    136,204.32x = 203,869.53 × 72,866.01
  4. Step 4: Simplify right side
    136,204.32x = 14,855,159,211.68
  5. Step 5: Solve for x
    x = 14,855,159,211.68/136,204.32
  6. Step 6: Final answer
    x = 109,065.26

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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.