Home / 189,905.80-284,901.90-110,979.40

Finding the Fourth Proportional to 189,905.80, 284,901.90 and 110,979.40

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Solution

The fourth proportional to 189,905.80, 284,901.90 and 110,979.40 is: 166,494.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,905.80 : 284,901.90 = 110,979.40 : x
  2. Step 2: Convert to fraction form
    189,905.80/284,901.90 = 110,979.40/x
  3. Step 3: Cross multiply
    189,905.80x = 284,901.90 × 110,979.40
  4. Step 4: Simplify right side
    189,905.80x = 31,618,241,920.86
  5. Step 5: Solve for x
    x = 31,618,241,920.86/189,905.80
  6. Step 6: Final answer
    x = 166,494.35

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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.