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Finding the Fourth Proportional to 191,995.24, 287,930.28 and 90,783.28

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Solution

The fourth proportional to 191,995.24, 287,930.28 and 90,783.28 is: 136,145.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,995.24 : 287,930.28 = 90,783.28 : x
  2. Step 2: Convert to fraction form
    191,995.24/287,930.28 = 90,783.28/x
  3. Step 3: Cross multiply
    191,995.24x = 287,930.28 × 90,783.28
  4. Step 4: Simplify right side
    191,995.24x = 26,139,255,229.72
  5. Step 5: Solve for x
    x = 26,139,255,229.72/191,995.24
  6. Step 6: Final answer
    x = 136,145.33

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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.