Home / 121,664.40-182,417.40-109,222.80

Finding the Fourth Proportional to 121,664.40, 182,417.40 and 109,222.80

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Solution

The fourth proportional to 121,664.40, 182,417.40 and 109,222.80 is: 163,763.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,664.40 : 182,417.40 = 109,222.80 : x
  2. Step 2: Convert to fraction form
    121,664.40/182,417.40 = 109,222.80/x
  3. Step 3: Cross multiply
    121,664.40x = 182,417.40 × 109,222.80
  4. Step 4: Simplify right side
    121,664.40x = 19,924,139,196.72
  5. Step 5: Solve for x
    x = 19,924,139,196.72/121,664.40
  6. Step 6: Final answer
    x = 163,763.10

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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.