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Finding the Fourth Proportional to 104,350.58, 156,423 and 66,803.84

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Solution

The fourth proportional to 104,350.58, 156,423 and 66,803.84 is: 100,139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,350.58 : 156,423 = 66,803.84 : x
  2. Step 2: Convert to fraction form
    104,350.58/156,423 = 66,803.84/x
  3. Step 3: Cross multiply
    104,350.58x = 156,423 × 66,803.84
  4. Step 4: Simplify right side
    104,350.58x = 10,449,657,064.32
  5. Step 5: Solve for x
    x = 10,449,657,064.32/104,350.58
  6. Step 6: Final answer
    x = 100,139.90

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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.