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Finding the Fourth Proportional to 136,112, 204,209.40 and 69,598.82

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Solution

The fourth proportional to 136,112, 204,209.40 and 69,598.82 is: 104,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,112 : 204,209.40 = 69,598.82 : x
  2. Step 2: Convert to fraction form
    136,112/204,209.40 = 69,598.82/x
  3. Step 3: Cross multiply
    136,112x = 204,209.40 × 69,598.82
  4. Step 4: Simplify right side
    136,112x = 14,212,733,272.91
  5. Step 5: Solve for x
    x = 14,212,733,272.91/136,112
  6. Step 6: Final answer
    x = 104,419.40

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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.