Home / 91,122.08-136,640.25-31,134.51

Finding the Fourth Proportional to 91,122.08, 136,640.25 and 31,134.51

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Solution

The fourth proportional to 91,122.08, 136,640.25 and 31,134.51 is: 46,687.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,122.08 : 136,640.25 = 31,134.51 : x
  2. Step 2: Convert to fraction form
    91,122.08/136,640.25 = 31,134.51/x
  3. Step 3: Cross multiply
    91,122.08x = 136,640.25 × 31,134.51
  4. Step 4: Simplify right side
    91,122.08x = 4,254,227,230.03
  5. Step 5: Solve for x
    x = 4,254,227,230.03/91,122.08
  6. Step 6: Final answer
    x = 46,687.12

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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.