Home / 74,138.51-111,115.25-36,156.47

Finding the Fourth Proportional to 74,138.51, 111,115.25 and 36,156.47

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Solution

The fourth proportional to 74,138.51, 111,115.25 and 36,156.47 is: 54,189.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,138.51 : 111,115.25 = 36,156.47 : x
  2. Step 2: Convert to fraction form
    74,138.51/111,115.25 = 36,156.47/x
  3. Step 3: Cross multiply
    74,138.51x = 111,115.25 × 36,156.47
  4. Step 4: Simplify right side
    74,138.51x = 4,017,535,300.17
  5. Step 5: Solve for x
    x = 4,017,535,300.17/74,138.51
  6. Step 6: Final answer
    x = 54,189.59

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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.