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Finding the Fourth Proportional to 191,429.38, 287,208.02 and 84,798.86

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Solution

The fourth proportional to 191,429.38, 287,208.02 and 84,798.86 is: 127,226.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,429.38 : 287,208.02 = 84,798.86 : x
  2. Step 2: Convert to fraction form
    191,429.38/287,208.02 = 84,798.86/x
  3. Step 3: Cross multiply
    191,429.38x = 287,208.02 × 84,798.86
  4. Step 4: Simplify right side
    191,429.38x = 24,354,912,678.86
  5. Step 5: Solve for x
    x = 24,354,912,678.86/191,429.38
  6. Step 6: Final answer
    x = 127,226.62

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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.