Home / 136,062.54-187,689.63-81,600.21

Finding the Fourth Proportional to 136,062.54, 187,689.63 and 81,600.21

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Solution

The fourth proportional to 136,062.54, 187,689.63 and 81,600.21 is: 112,562.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,062.54 : 187,689.63 = 81,600.21 : x
  2. Step 2: Convert to fraction form
    136,062.54/187,689.63 = 81,600.21/x
  3. Step 3: Cross multiply
    136,062.54x = 187,689.63 × 81,600.21
  4. Step 4: Simplify right side
    136,062.54x = 15,315,513,222.82
  5. Step 5: Solve for x
    x = 15,315,513,222.82/136,062.54
  6. Step 6: Final answer
    x = 112,562.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.