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Finding the Fourth Proportional to 191,673.24, 287,491.84 and 90,447.72

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Solution

The fourth proportional to 191,673.24, 287,491.84 and 90,447.72 is: 135,663.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,673.24 : 287,491.84 = 90,447.72 : x
  2. Step 2: Convert to fraction form
    191,673.24/287,491.84 = 90,447.72/x
  3. Step 3: Cross multiply
    191,673.24x = 287,491.84 × 90,447.72
  4. Step 4: Simplify right side
    191,673.24x = 26,002,981,446.60
  5. Step 5: Solve for x
    x = 26,002,981,446.60/191,673.24
  6. Step 6: Final answer
    x = 135,663.08

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1.5x scale

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.