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Finding the Fourth Proportional to 103,223.54, 154,818.74 and 28,326.19

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Solution

The fourth proportional to 103,223.54, 154,818.74 and 28,326.19 is: 42,484.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,223.54 : 154,818.74 = 28,326.19 : x
  2. Step 2: Convert to fraction form
    103,223.54/154,818.74 = 28,326.19/x
  3. Step 3: Cross multiply
    103,223.54x = 154,818.74 × 28,326.19
  4. Step 4: Simplify right side
    103,223.54x = 4,385,425,044.80
  5. Step 5: Solve for x
    x = 4,385,425,044.80/103,223.54
  6. Step 6: Final answer
    x = 42,484.74

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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.