Home / 215,127,709.38-322,847,008.68-85,660,706.52

Finding the Fourth Proportional to 215,127,709.38, 322,847,008.68 and 85,660,706.52

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Solution

The fourth proportional to 215,127,709.38, 322,847,008.68 and 85,660,706.52 is: 128,552,955.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,127,709.38 : 322,847,008.68 = 85,660,706.52 : x
  2. Step 2: Convert to fraction form
    215,127,709.38/322,847,008.68 = 85,660,706.52/x
  3. Step 3: Cross multiply
    215,127,709.38x = 322,847,008.68 × 85,660,706.52
  4. Step 4: Simplify right side
    215,127,709.38x = 27,655,302,861,397,372
  5. Step 5: Solve for x
    x = 27,655,302,861,397,372/215,127,709.38
  6. Step 6: Final answer
    x = 128,552,955.55

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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.