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Finding the Fourth Proportional to 191,472.39, 264,229.70 and 105,429.60

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Solution

The fourth proportional to 191,472.39, 264,229.70 and 105,429.60 is: 145,491.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,472.39 : 264,229.70 = 105,429.60 : x
  2. Step 2: Convert to fraction form
    191,472.39/264,229.70 = 105,429.60/x
  3. Step 3: Cross multiply
    191,472.39x = 264,229.70 × 105,429.60
  4. Step 4: Simplify right side
    191,472.39x = 27,857,631,051.97
  5. Step 5: Solve for x
    x = 27,857,631,051.97/191,472.39
  6. Step 6: Final answer
    x = 145,491.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.