Home / 78,115.26-117,173.06-28,230.59

Finding the Fourth Proportional to 78,115.26, 117,173.06 and 28,230.59

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Solution

The fourth proportional to 78,115.26, 117,173.06 and 28,230.59 is: 42,345.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,115.26 : 117,173.06 = 28,230.59 : x
  2. Step 2: Convert to fraction form
    78,115.26/117,173.06 = 28,230.59/x
  3. Step 3: Cross multiply
    78,115.26x = 117,173.06 × 28,230.59
  4. Step 4: Simplify right side
    78,115.26x = 3,307,863,888.89
  5. Step 5: Solve for x
    x = 3,307,863,888.89/78,115.26
  6. Step 6: Final answer
    x = 42,345.94

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Half scale
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Double scale
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Similar ratio
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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.