Home / 108,089.93-162,198.08-78,074.57

Finding the Fourth Proportional to 108,089.93, 162,198.08 and 78,074.57

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Solution

The fourth proportional to 108,089.93, 162,198.08 and 78,074.57 is: 117,157.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,089.93 : 162,198.08 = 78,074.57 : x
  2. Step 2: Convert to fraction form
    108,089.93/162,198.08 = 78,074.57/x
  3. Step 3: Cross multiply
    108,089.93x = 162,198.08 × 78,074.57
  4. Step 4: Simplify right side
    108,089.93x = 12,663,544,960.45
  5. Step 5: Solve for x
    x = 12,663,544,960.45/108,089.93
  6. Step 6: Final answer
    x = 117,157.49

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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.