Home / 135,328.72-186,751.05-74,899.39

Finding the Fourth Proportional to 135,328.72, 186,751.05 and 74,899.39

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Solution

The fourth proportional to 135,328.72, 186,751.05 and 74,899.39 is: 103,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,328.72 : 186,751.05 = 74,899.39 : x
  2. Step 2: Convert to fraction form
    135,328.72/186,751.05 = 74,899.39/x
  3. Step 3: Cross multiply
    135,328.72x = 186,751.05 × 74,899.39
  4. Step 4: Simplify right side
    135,328.72x = 13,987,539,726.86
  5. Step 5: Solve for x
    x = 13,987,539,726.86/135,328.72
  6. Step 6: Final answer
    x = 103,359.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.