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Finding the Fourth Proportional to 191,791.04, 287,624.32 and 90,573.44

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Solution

The fourth proportional to 191,791.04, 287,624.32 and 90,573.44 is: 135,830.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,791.04 : 287,624.32 = 90,573.44 : x
  2. Step 2: Convert to fraction form
    191,791.04/287,624.32 = 90,573.44/x
  3. Step 3: Cross multiply
    191,791.04x = 287,624.32 × 90,573.44
  4. Step 4: Simplify right side
    191,791.04x = 26,051,124,043.39
  5. Step 5: Solve for x
    x = 26,051,124,043.39/191,791.04
  6. Step 6: Final answer
    x = 135,830.77

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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.