Home / 81,343.42-121,969.85-25,167.59

Finding the Fourth Proportional to 81,343.42, 121,969.85 and 25,167.59

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Solution

The fourth proportional to 81,343.42, 121,969.85 and 25,167.59 is: 37,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,343.42 : 121,969.85 = 25,167.59 : x
  2. Step 2: Convert to fraction form
    81,343.42/121,969.85 = 25,167.59/x
  3. Step 3: Cross multiply
    81,343.42x = 121,969.85 × 25,167.59
  4. Step 4: Simplify right side
    81,343.42x = 3,069,686,630.23
  5. Step 5: Solve for x
    x = 3,069,686,630.23/81,343.42
  6. Step 6: Final answer
    x = 37,737.37

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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.