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Finding the Fourth Proportional to 104,602.60, 156,903.90 and 100,520.20

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Solution

The fourth proportional to 104,602.60, 156,903.90 and 100,520.20 is: 150,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,602.60 : 156,903.90 = 100,520.20 : x
  2. Step 2: Convert to fraction form
    104,602.60/156,903.90 = 100,520.20/x
  3. Step 3: Cross multiply
    104,602.60x = 156,903.90 × 100,520.20
  4. Step 4: Simplify right side
    104,602.60x = 15,772,011,408.78
  5. Step 5: Solve for x
    x = 15,772,011,408.78/104,602.60
  6. Step 6: Final answer
    x = 150,780.30

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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.