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Finding the Fourth Proportional to 108,002.30, 162,003.45 and 81,758.30

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Solution

The fourth proportional to 108,002.30, 162,003.45 and 81,758.30 is: 122,637.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,002.30 : 162,003.45 = 81,758.30 : x
  2. Step 2: Convert to fraction form
    108,002.30/162,003.45 = 81,758.30/x
  3. Step 3: Cross multiply
    108,002.30x = 162,003.45 × 81,758.30
  4. Step 4: Simplify right side
    108,002.30x = 13,245,126,666.14
  5. Step 5: Solve for x
    x = 13,245,126,666.14/108,002.30
  6. Step 6: Final answer
    x = 122,637.45

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1.5x scale

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.