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Finding the Fourth Proportional to 103,130.94, 154,696.53 and 28,251.72

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Solution

The fourth proportional to 103,130.94, 154,696.53 and 28,251.72 is: 42,377.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,130.94 : 154,696.53 = 28,251.72 : x
  2. Step 2: Convert to fraction form
    103,130.94/154,696.53 = 28,251.72/x
  3. Step 3: Cross multiply
    103,130.94x = 154,696.53 × 28,251.72
  4. Step 4: Simplify right side
    103,130.94x = 4,370,443,577.67
  5. Step 5: Solve for x
    x = 4,370,443,577.67/103,130.94
  6. Step 6: Final answer
    x = 42,377.62

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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.