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Finding the Fourth Proportional to 162,129.30, 243,048.15 and 105,996.30

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Solution

The fourth proportional to 162,129.30, 243,048.15 and 105,996.30 is: 158,899.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,129.30 : 243,048.15 = 105,996.30 : x
  2. Step 2: Convert to fraction form
    162,129.30/243,048.15 = 105,996.30/x
  3. Step 3: Cross multiply
    162,129.30x = 243,048.15 × 105,996.30
  4. Step 4: Simplify right side
    162,129.30x = 25,762,204,621.85
  5. Step 5: Solve for x
    x = 25,762,204,621.85/162,129.30
  6. Step 6: Final answer
    x = 158,899.13

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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.