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Finding the Fourth Proportional to 108,001.80, 162,002.70 and 103,081.06

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Solution

The fourth proportional to 108,001.80, 162,002.70 and 103,081.06 is: 154,621.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,001.80 : 162,002.70 = 103,081.06 : x
  2. Step 2: Convert to fraction form
    108,001.80/162,002.70 = 103,081.06/x
  3. Step 3: Cross multiply
    108,001.80x = 162,002.70 × 103,081.06
  4. Step 4: Simplify right side
    108,001.80x = 16,699,410,038.86
  5. Step 5: Solve for x
    x = 16,699,410,038.86/108,001.80
  6. Step 6: Final answer
    x = 154,621.59

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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.