Home / 100,935.12-151,465.32-68,548.08

Finding the Fourth Proportional to 100,935.12, 151,465.32 and 68,548.08

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Solution

The fourth proportional to 100,935.12, 151,465.32 and 68,548.08 is: 102,864.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,935.12 : 151,465.32 = 68,548.08 : x
  2. Step 2: Convert to fraction form
    100,935.12/151,465.32 = 68,548.08/x
  3. Step 3: Cross multiply
    100,935.12x = 151,465.32 × 68,548.08
  4. Step 4: Simplify right side
    100,935.12x = 10,382,656,872.59
  5. Step 5: Solve for x
    x = 10,382,656,872.59/100,935.12
  6. Step 6: Final answer
    x = 102,864.66

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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.