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Finding the Fourth Proportional to 145,882.80, 201,311.46 and 98,128.44

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Solution

The fourth proportional to 145,882.80, 201,311.46 and 98,128.44 is: 135,412.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,882.80 : 201,311.46 = 98,128.44 : x
  2. Step 2: Convert to fraction form
    145,882.80/201,311.46 = 98,128.44/x
  3. Step 3: Cross multiply
    145,882.80x = 201,311.46 × 98,128.44
  4. Step 4: Simplify right side
    145,882.80x = 19,754,379,523.92
  5. Step 5: Solve for x
    x = 19,754,379,523.92/145,882.80
  6. Step 6: Final answer
    x = 135,412.67

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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.