Home / 153,530.31-211,872.26-89,012.05

Finding the Fourth Proportional to 153,530.31, 211,872.26 and 89,012.05

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Solution

The fourth proportional to 153,530.31, 211,872.26 and 89,012.05 is: 122,836.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,530.31 : 211,872.26 = 89,012.05 : x
  2. Step 2: Convert to fraction form
    153,530.31/211,872.26 = 89,012.05/x
  3. Step 3: Cross multiply
    153,530.31x = 211,872.26 × 89,012.05
  4. Step 4: Simplify right side
    153,530.31x = 18,859,184,200.73
  5. Step 5: Solve for x
    x = 18,859,184,200.73/153,530.31
  6. Step 6: Final answer
    x = 122,836.88

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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.