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Finding the Fourth Proportional to 149,710.80, 224,566.20 and 70,978.80

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Solution

The fourth proportional to 149,710.80, 224,566.20 and 70,978.80 is: 106,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,710.80 : 224,566.20 = 70,978.80 : x
  2. Step 2: Convert to fraction form
    149,710.80/224,566.20 = 70,978.80/x
  3. Step 3: Cross multiply
    149,710.80x = 224,566.20 × 70,978.80
  4. Step 4: Simplify right side
    149,710.80x = 15,939,439,396.56
  5. Step 5: Solve for x
    x = 15,939,439,396.56/149,710.80
  6. Step 6: Final answer
    x = 106,468.20

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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.