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Finding the Fourth Proportional to 108,403.41, 162,394.72 and 79,888.58

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Solution

The fourth proportional to 108,403.41, 162,394.72 and 79,888.58 is: 119,677.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,403.41 : 162,394.72 = 79,888.58 : x
  2. Step 2: Convert to fraction form
    108,403.41/162,394.72 = 79,888.58/x
  3. Step 3: Cross multiply
    108,403.41x = 162,394.72 × 79,888.58
  4. Step 4: Simplify right side
    108,403.41x = 12,973,483,626.96
  5. Step 5: Solve for x
    x = 12,973,483,626.96/108,403.41
  6. Step 6: Final answer
    x = 119,677.81

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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.