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Finding the Fourth Proportional to 102,707.20, 144,204.80 and 102,707.20

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Solution

The fourth proportional to 102,707.20, 144,204.80 and 102,707.20 is: 144,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,707.20 : 144,204.80 = 102,707.20 : x
  2. Step 2: Convert to fraction form
    102,707.20/144,204.80 = 102,707.20/x
  3. Step 3: Cross multiply
    102,707.20x = 144,204.80 × 102,707.20
  4. Step 4: Simplify right side
    102,707.20x = 14,810,871,234.56
  5. Step 5: Solve for x
    x = 14,810,871,234.56/102,707.20
  6. Step 6: Final answer
    x = 144,204.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.