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Finding the Fourth Proportional to 102,600.34, 153,954.70 and 72,807.10

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Solution

The fourth proportional to 102,600.34, 153,954.70 and 72,807.10 is: 109,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,600.34 : 153,954.70 = 72,807.10 : x
  2. Step 2: Convert to fraction form
    102,600.34/153,954.70 = 72,807.10/x
  3. Step 3: Cross multiply
    102,600.34x = 153,954.70 × 72,807.10
  4. Step 4: Simplify right side
    102,600.34x = 11,208,995,238.37
  5. Step 5: Solve for x
    x = 11,208,995,238.37/102,600.34
  6. Step 6: Final answer
    x = 109,249.10

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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.