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Finding the Fourth Proportional to 138,149.34, 207,223.98 and 98,783.34

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Solution

The fourth proportional to 138,149.34, 207,223.98 and 98,783.34 is: 148,174.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,149.34 : 207,223.98 = 98,783.34 : x
  2. Step 2: Convert to fraction form
    138,149.34/207,223.98 = 98,783.34/x
  3. Step 3: Cross multiply
    138,149.34x = 207,223.98 × 98,783.34
  4. Step 4: Simplify right side
    138,149.34x = 20,470,276,872.49
  5. Step 5: Solve for x
    x = 20,470,276,872.49/138,149.34
  6. Step 6: Final answer
    x = 148,174.99

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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.