Home / 121,540.71-182,330.51-51,420.63

Finding the Fourth Proportional to 121,540.71, 182,330.51 and 51,420.63

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Solution

The fourth proportional to 121,540.71, 182,330.51 and 51,420.63 is: 77,139.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,540.71 : 182,330.51 = 51,420.63 : x
  2. Step 2: Convert to fraction form
    121,540.71/182,330.51 = 51,420.63/x
  3. Step 3: Cross multiply
    121,540.71x = 182,330.51 × 51,420.63
  4. Step 4: Simplify right side
    121,540.71x = 9,375,549,435.32
  5. Step 5: Solve for x
    x = 9,375,549,435.32/121,540.71
  6. Step 6: Final answer
    x = 77,139.17

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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.