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Finding the Fourth Proportional to 118,403.89, 176,742.10 and 103,456.96

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Solution

The fourth proportional to 118,403.89, 176,742.10 and 103,456.96 is: 154,430.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,403.89 : 176,742.10 = 103,456.96 : x
  2. Step 2: Convert to fraction form
    118,403.89/176,742.10 = 103,456.96/x
  3. Step 3: Cross multiply
    118,403.89x = 176,742.10 × 103,456.96
  4. Step 4: Simplify right side
    118,403.89x = 18,285,200,370.02
  5. Step 5: Solve for x
    x = 18,285,200,370.02/118,403.89
  6. Step 6: Final answer
    x = 154,430.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.