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Finding the Fourth Proportional to 245,754.03, 368,719.91 and 85,853.67

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Solution

The fourth proportional to 245,754.03, 368,719.91 and 85,853.67 is: 128,811.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,754.03 : 368,719.91 = 85,853.67 : x
  2. Step 2: Convert to fraction form
    245,754.03/368,719.91 = 85,853.67/x
  3. Step 3: Cross multiply
    245,754.03x = 368,719.91 × 85,853.67
  4. Step 4: Simplify right side
    245,754.03x = 31,655,957,046.30
  5. Step 5: Solve for x
    x = 31,655,957,046.30/245,754.03
  6. Step 6: Final answer
    x = 128,811.55

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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.