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Finding the Fourth Proportional to 136,820.60, 205,252.50 and 57,935.32

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Solution

The fourth proportional to 136,820.60, 205,252.50 and 57,935.32 is: 86,912.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,820.60 : 205,252.50 = 57,935.32 : x
  2. Step 2: Convert to fraction form
    136,820.60/205,252.50 = 57,935.32/x
  3. Step 3: Cross multiply
    136,820.60x = 205,252.50 × 57,935.32
  4. Step 4: Simplify right side
    136,820.60x = 11,891,369,268.30
  5. Step 5: Solve for x
    x = 11,891,369,268.30/136,820.60
  6. Step 6: Final answer
    x = 86,912.13

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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.