Home / 78,114.03-117,146.74-28,187.62

Finding the Fourth Proportional to 78,114.03, 117,146.74 and 28,187.62

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Solution

The fourth proportional to 78,114.03, 117,146.74 and 28,187.62 is: 42,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,114.03 : 117,146.74 = 28,187.62 : x
  2. Step 2: Convert to fraction form
    78,114.03/117,146.74 = 28,187.62/x
  3. Step 3: Cross multiply
    78,114.03x = 117,146.74 × 28,187.62
  4. Step 4: Simplify right side
    78,114.03x = 3,302,087,791.36
  5. Step 5: Solve for x
    x = 3,302,087,791.36/78,114.03
  6. Step 6: Final answer
    x = 42,272.66

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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.