Home / 99,419.40-137,179.88-59,143.37

Finding the Fourth Proportional to 99,419.40, 137,179.88 and 59,143.37

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Solution

The fourth proportional to 99,419.40, 137,179.88 and 59,143.37 is: 81,606.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,419.40 : 137,179.88 = 59,143.37 : x
  2. Step 2: Convert to fraction form
    99,419.40/137,179.88 = 59,143.37/x
  3. Step 3: Cross multiply
    99,419.40x = 137,179.88 × 59,143.37
  4. Step 4: Simplify right side
    99,419.40x = 8,113,279,639.57
  5. Step 5: Solve for x
    x = 8,113,279,639.57/99,419.40
  6. Step 6: Final answer
    x = 81,606.60

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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.