Home / 154,029.09-212,539.17-86,037.42

Finding the Fourth Proportional to 154,029.09, 212,539.17 and 86,037.42

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Solution

The fourth proportional to 154,029.09, 212,539.17 and 86,037.42 is: 118,719.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,029.09 : 212,539.17 = 86,037.42 : x
  2. Step 2: Convert to fraction form
    154,029.09/212,539.17 = 86,037.42/x
  3. Step 3: Cross multiply
    154,029.09x = 212,539.17 × 86,037.42
  4. Step 4: Simplify right side
    154,029.09x = 18,286,321,835.74
  5. Step 5: Solve for x
    x = 18,286,321,835.74/154,029.09
  6. Step 6: Final answer
    x = 118,719.92

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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.