Home / 136,954.06-189,117.79-85,359.21

Finding the Fourth Proportional to 136,954.06, 189,117.79 and 85,359.21

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Solution

The fourth proportional to 136,954.06, 189,117.79 and 85,359.21 is: 117,871.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,954.06 : 189,117.79 = 85,359.21 : x
  2. Step 2: Convert to fraction form
    136,954.06/189,117.79 = 85,359.21/x
  3. Step 3: Cross multiply
    136,954.06x = 189,117.79 × 85,359.21
  4. Step 4: Simplify right side
    136,954.06x = 16,142,944,640.61
  5. Step 5: Solve for x
    x = 16,142,944,640.61/136,954.06
  6. Step 6: Final answer
    x = 117,871.24

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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.