Home / 136,955.06-189,119.17-85,360.21

Finding the Fourth Proportional to 136,955.06, 189,119.17 and 85,360.21

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Solution

The fourth proportional to 136,955.06, 189,119.17 and 85,360.21 is: 117,872.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,955.06 : 189,119.17 = 85,360.21 : x
  2. Step 2: Convert to fraction form
    136,955.06/189,119.17 = 85,360.21/x
  3. Step 3: Cross multiply
    136,955.06x = 189,119.17 × 85,360.21
  4. Step 4: Simplify right side
    136,955.06x = 16,143,252,066.23
  5. Step 5: Solve for x
    x = 16,143,252,066.23/136,955.06
  6. Step 6: Final answer
    x = 117,872.62

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1.5x scale

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.