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Finding the Fourth Proportional to 102,762, 154,143.04 and 28,890

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Solution

The fourth proportional to 102,762, 154,143.04 and 28,890 is: 43,335.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,762 : 154,143.04 = 28,890 : x
  2. Step 2: Convert to fraction form
    102,762/154,143.04 = 28,890/x
  3. Step 3: Cross multiply
    102,762x = 154,143.04 × 28,890
  4. Step 4: Simplify right side
    102,762x = 4,453,192,425.60
  5. Step 5: Solve for x
    x = 4,453,192,425.60/102,762
  6. Step 6: Final answer
    x = 43,335.01

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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.