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Finding the Fourth Proportional to 103,369.97, 155,060.26 and 28,488.48

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Solution

The fourth proportional to 103,369.97, 155,060.26 and 28,488.48 is: 42,734.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,369.97 : 155,060.26 = 28,488.48 : x
  2. Step 2: Convert to fraction form
    103,369.97/155,060.26 = 28,488.48/x
  3. Step 3: Cross multiply
    103,369.97x = 155,060.26 × 28,488.48
  4. Step 4: Simplify right side
    103,369.97x = 4,417,430,463.11
  5. Step 5: Solve for x
    x = 4,417,430,463.11/103,369.97
  6. Step 6: Final answer
    x = 42,734.17

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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.