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Finding the Fourth Proportional to 191,351.48, 287,027.21 and 66,663.32

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Solution

The fourth proportional to 191,351.48, 287,027.21 and 66,663.32 is: 99,994.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,351.48 : 287,027.21 = 66,663.32 : x
  2. Step 2: Convert to fraction form
    191,351.48/287,027.21 = 66,663.32/x
  3. Step 3: Cross multiply
    191,351.48x = 287,027.21 × 66,663.32
  4. Step 4: Simplify right side
    191,351.48x = 19,134,185,480.46
  5. Step 5: Solve for x
    x = 19,134,185,480.46/191,351.48
  6. Step 6: Final answer
    x = 99,994.97

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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.