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Finding the Fourth Proportional to 104,612.60, 156,918.90 and 100,530.20

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Solution

The fourth proportional to 104,612.60, 156,918.90 and 100,530.20 is: 150,795.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,612.60 : 156,918.90 = 100,530.20 : x
  2. Step 2: Convert to fraction form
    104,612.60/156,918.90 = 100,530.20/x
  3. Step 3: Cross multiply
    104,612.60x = 156,918.90 × 100,530.20
  4. Step 4: Simplify right side
    104,612.60x = 15,775,088,400.78
  5. Step 5: Solve for x
    x = 15,775,088,400.78/104,612.60
  6. Step 6: Final answer
    x = 150,795.30

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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.