Home / 121,485.40-182,148.90-109,043.80

Finding the Fourth Proportional to 121,485.40, 182,148.90 and 109,043.80

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Solution

The fourth proportional to 121,485.40, 182,148.90 and 109,043.80 is: 163,494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,485.40 : 182,148.90 = 109,043.80 : x
  2. Step 2: Convert to fraction form
    121,485.40/182,148.90 = 109,043.80/x
  3. Step 3: Cross multiply
    121,485.40x = 182,148.90 × 109,043.80
  4. Step 4: Simplify right side
    121,485.40x = 19,862,208,221.82
  5. Step 5: Solve for x
    x = 19,862,208,221.82/121,485.40
  6. Step 6: Final answer
    x = 163,494.61

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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.