Home / 108,149.43-162,224.10-78,754.32

Finding the Fourth Proportional to 108,149.43, 162,224.10 and 78,754.32

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Solution

The fourth proportional to 108,149.43, 162,224.10 and 78,754.32 is: 118,131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,149.43 : 162,224.10 = 78,754.32 : x
  2. Step 2: Convert to fraction form
    108,149.43/162,224.10 = 78,754.32/x
  3. Step 3: Cross multiply
    108,149.43x = 162,224.10 × 78,754.32
  4. Step 4: Simplify right side
    108,149.43x = 12,775,848,683.11
  5. Step 5: Solve for x
    x = 12,775,848,683.11/108,149.43
  6. Step 6: Final answer
    x = 118,131.45

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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.