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Finding the Fourth Proportional to 191,519.60, 287,279.52 and 91,656.32

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Solution

The fourth proportional to 191,519.60, 287,279.52 and 91,656.32 is: 137,484.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,519.60 : 287,279.52 = 91,656.32 : x
  2. Step 2: Convert to fraction form
    191,519.60/287,279.52 = 91,656.32/x
  3. Step 3: Cross multiply
    191,519.60x = 287,279.52 × 91,656.32
  4. Step 4: Simplify right side
    191,519.60x = 26,330,983,614.57
  5. Step 5: Solve for x
    x = 26,330,983,614.57/191,519.60
  6. Step 6: Final answer
    x = 137,484.54

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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.