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Finding the Fourth Proportional to 149,402.80, 224,104.20 and 138,905.20

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Solution

The fourth proportional to 149,402.80, 224,104.20 and 138,905.20 is: 208,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,402.80 : 224,104.20 = 138,905.20 : x
  2. Step 2: Convert to fraction form
    149,402.80/224,104.20 = 138,905.20/x
  3. Step 3: Cross multiply
    149,402.80x = 224,104.20 × 138,905.20
  4. Step 4: Simplify right side
    149,402.80x = 31,129,238,721.84
  5. Step 5: Solve for x
    x = 31,129,238,721.84/149,402.80
  6. Step 6: Final answer
    x = 208,357.80

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1.5x scale

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.