Home / 74,419.23-111,147.16-67,385.19

Finding the Fourth Proportional to 74,419.23, 111,147.16 and 67,385.19

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Solution

The fourth proportional to 74,419.23, 111,147.16 and 67,385.19 is: 100,641.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,419.23 : 111,147.16 = 67,385.19 : x
  2. Step 2: Convert to fraction form
    74,419.23/111,147.16 = 67,385.19/x
  3. Step 3: Cross multiply
    74,419.23x = 111,147.16 × 67,385.19
  4. Step 4: Simplify right side
    74,419.23x = 7,489,672,326.10
  5. Step 5: Solve for x
    x = 7,489,672,326.10/74,419.23
  6. Step 6: Final answer
    x = 100,641.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.