Home / 215,145.45-322,725.02-65,387.07

Finding the Fourth Proportional to 215,145.45, 322,725.02 and 65,387.07

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Solution

The fourth proportional to 215,145.45, 322,725.02 and 65,387.07 is: 98,082.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,145.45 : 322,725.02 = 65,387.07 : x
  2. Step 2: Convert to fraction form
    215,145.45/322,725.02 = 65,387.07/x
  3. Step 3: Cross multiply
    215,145.45x = 322,725.02 × 65,387.07
  4. Step 4: Simplify right side
    215,145.45x = 21,102,043,146.56
  5. Step 5: Solve for x
    x = 21,102,043,146.56/215,145.45
  6. Step 6: Final answer
    x = 98,082.68

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1.5x scale

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.