Home / 121,939.36-182,982-69,423.52

Finding the Fourth Proportional to 121,939.36, 182,982 and 69,423.52

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Solution

The fourth proportional to 121,939.36, 182,982 and 69,423.52 is: 104,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,939.36 : 182,982 = 69,423.52 : x
  2. Step 2: Convert to fraction form
    121,939.36/182,982 = 69,423.52/x
  3. Step 3: Cross multiply
    121,939.36x = 182,982 × 69,423.52
  4. Step 4: Simplify right side
    121,939.36x = 12,703,254,536.64
  5. Step 5: Solve for x
    x = 12,703,254,536.64/121,939.36
  6. Step 6: Final answer
    x = 104,176.82

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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.