Home / 121,420.51-182,131.11-42,516.29

Finding the Fourth Proportional to 121,420.51, 182,131.11 and 42,516.29

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Solution

The fourth proportional to 121,420.51, 182,131.11 and 42,516.29 is: 63,774.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,420.51 : 182,131.11 = 42,516.29 : x
  2. Step 2: Convert to fraction form
    121,420.51/182,131.11 = 42,516.29/x
  3. Step 3: Cross multiply
    121,420.51x = 182,131.11 × 42,516.29
  4. Step 4: Simplify right side
    121,420.51x = 7,743,539,546.11
  5. Step 5: Solve for x
    x = 7,743,539,546.11/121,420.51
  6. Step 6: Final answer
    x = 63,774.56

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1.5x scale

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.