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Finding the Fourth Proportional to 191,722.89, 287,165.25 and 158,064.96

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Solution

The fourth proportional to 191,722.89, 287,165.25 and 158,064.96 is: 236,751.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,722.89 : 287,165.25 = 158,064.96 : x
  2. Step 2: Convert to fraction form
    191,722.89/287,165.25 = 158,064.96/x
  3. Step 3: Cross multiply
    191,722.89x = 287,165.25 × 158,064.96
  4. Step 4: Simplify right side
    191,722.89x = 45,390,763,754.64
  5. Step 5: Solve for x
    x = 45,390,763,754.64/191,722.89
  6. Step 6: Final answer
    x = 236,751.93

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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.