Home / 159,012.21-219,439.40-91,028.91

Finding the Fourth Proportional to 159,012.21, 219,439.40 and 91,028.91

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Solution

The fourth proportional to 159,012.21, 219,439.40 and 91,028.91 is: 125,621.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,012.21 : 219,439.40 = 91,028.91 : x
  2. Step 2: Convert to fraction form
    159,012.21/219,439.40 = 91,028.91/x
  3. Step 3: Cross multiply
    159,012.21x = 219,439.40 × 91,028.91
  4. Step 4: Simplify right side
    159,012.21x = 19,975,329,393.05
  5. Step 5: Solve for x
    x = 19,975,329,393.05/159,012.21
  6. Step 6: Final answer
    x = 125,621.36

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1.5x scale

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.