Home / 121,161.12-181,680.60-70,576.44

Finding the Fourth Proportional to 121,161.12, 181,680.60 and 70,576.44

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Solution

The fourth proportional to 121,161.12, 181,680.60 and 70,576.44 is: 105,829.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,161.12 : 181,680.60 = 70,576.44 : x
  2. Step 2: Convert to fraction form
    121,161.12/181,680.60 = 70,576.44/x
  3. Step 3: Cross multiply
    121,161.12x = 181,680.60 × 70,576.44
  4. Step 4: Simplify right side
    121,161.12x = 12,822,369,965.06
  5. Step 5: Solve for x
    x = 12,822,369,965.06/121,161.12
  6. Step 6: Final answer
    x = 105,829.08

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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.