Home / 108,135.53-162,203.27-78,740.42

Finding the Fourth Proportional to 108,135.53, 162,203.27 and 78,740.42

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Solution

The fourth proportional to 108,135.53, 162,203.27 and 78,740.42 is: 118,110.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,135.53 : 162,203.27 = 78,740.42 : x
  2. Step 2: Convert to fraction form
    108,135.53/162,203.27 = 78,740.42/x
  3. Step 3: Cross multiply
    108,135.53x = 162,203.27 × 78,740.42
  4. Step 4: Simplify right side
    108,135.53x = 12,771,953,616.98
  5. Step 5: Solve for x
    x = 12,771,953,616.98/108,135.53
  6. Step 6: Final answer
    x = 118,110.62

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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.