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Finding the Fourth Proportional to 189,019.58, 260,671.79 and 137,951.42

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Solution

The fourth proportional to 189,019.58, 260,671.79 and 137,951.42 is: 190,245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,019.58 : 260,671.79 = 137,951.42 : x
  2. Step 2: Convert to fraction form
    189,019.58/260,671.79 = 137,951.42/x
  3. Step 3: Cross multiply
    189,019.58x = 260,671.79 × 137,951.42
  4. Step 4: Simplify right side
    189,019.58x = 35,960,042,281.08
  5. Step 5: Solve for x
    x = 35,960,042,281.08/189,019.58
  6. Step 6: Final answer
    x = 190,245.07

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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.