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Finding the Fourth Proportional to 108,002.70, 162,004.05 and 68,588.10

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Solution

The fourth proportional to 108,002.70, 162,004.05 and 68,588.10 is: 102,882.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,002.70 : 162,004.05 = 68,588.10 : x
  2. Step 2: Convert to fraction form
    108,002.70/162,004.05 = 68,588.10/x
  3. Step 3: Cross multiply
    108,002.70x = 162,004.05 × 68,588.10
  4. Step 4: Simplify right side
    108,002.70x = 11,111,549,981.81
  5. Step 5: Solve for x
    x = 11,111,549,981.81/108,002.70
  6. Step 6: Final answer
    x = 102,882.15

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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.