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Finding the Fourth Proportional to 169,439.55, 253,994.03 and 80,669.19

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Solution

The fourth proportional to 169,439.55, 253,994.03 and 80,669.19 is: 120,925.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,439.55 : 253,994.03 = 80,669.19 : x
  2. Step 2: Convert to fraction form
    169,439.55/253,994.03 = 80,669.19/x
  3. Step 3: Cross multiply
    169,439.55x = 253,994.03 × 80,669.19
  4. Step 4: Simplify right side
    169,439.55x = 20,489,492,261.59
  5. Step 5: Solve for x
    x = 20,489,492,261.59/169,439.55
  6. Step 6: Final answer
    x = 120,925.09

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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.