Home / 145,286.03-217,523.03-78,486.85

Finding the Fourth Proportional to 145,286.03, 217,523.03 and 78,486.85

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Solution

The fourth proportional to 145,286.03, 217,523.03 and 78,486.85 is: 117,510.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,286.03 : 217,523.03 = 78,486.85 : x
  2. Step 2: Convert to fraction form
    145,286.03/217,523.03 = 78,486.85/x
  3. Step 3: Cross multiply
    145,286.03x = 217,523.03 × 78,486.85
  4. Step 4: Simplify right side
    145,286.03x = 17,072,697,427.16
  5. Step 5: Solve for x
    x = 17,072,697,427.16/145,286.03
  6. Step 6: Final answer
    x = 117,510.94

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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.