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Finding the Fourth Proportional to 250,143.64, 345,194.79 and 136,966.39

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Solution

The fourth proportional to 250,143.64, 345,194.79 and 136,966.39 is: 189,011.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,143.64 : 345,194.79 = 136,966.39 : x
  2. Step 2: Convert to fraction form
    250,143.64/345,194.79 = 136,966.39/x
  3. Step 3: Cross multiply
    250,143.64x = 345,194.79 × 136,966.39
  4. Step 4: Simplify right side
    250,143.64x = 47,280,082,507.13
  5. Step 5: Solve for x
    x = 47,280,082,507.13/250,143.64
  6. Step 6: Final answer
    x = 189,011.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.