Home / 121,531.80-182,643.30-106,325.40

Finding the Fourth Proportional to 121,531.80, 182,643.30 and 106,325.40

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Solution

The fourth proportional to 121,531.80, 182,643.30 and 106,325.40 is: 159,790.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,531.80 : 182,643.30 = 106,325.40 : x
  2. Step 2: Convert to fraction form
    121,531.80/182,643.30 = 106,325.40/x
  3. Step 3: Cross multiply
    121,531.80x = 182,643.30 × 106,325.40
  4. Step 4: Simplify right side
    121,531.80x = 19,419,621,929.82
  5. Step 5: Solve for x
    x = 19,419,621,929.82/121,531.80
  6. Step 6: Final answer
    x = 159,790.46

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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.