Home / 78,123.14-117,187.60-40,162.24

Finding the Fourth Proportional to 78,123.14, 117,187.60 and 40,162.24

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Solution

The fourth proportional to 78,123.14, 117,187.60 and 40,162.24 is: 60,244.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,123.14 : 117,187.60 = 40,162.24 : x
  2. Step 2: Convert to fraction form
    78,123.14/117,187.60 = 40,162.24/x
  3. Step 3: Cross multiply
    78,123.14x = 117,187.60 × 40,162.24
  4. Step 4: Simplify right side
    78,123.14x = 4,706,516,516.22
  5. Step 5: Solve for x
    x = 4,706,516,516.22/78,123.14
  6. Step 6: Final answer
    x = 60,244.85

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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.