Home / 121,531.33-182,315.21-42,631.66

Finding the Fourth Proportional to 121,531.33, 182,315.21 and 42,631.66

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Solution

The fourth proportional to 121,531.33, 182,315.21 and 42,631.66 is: 63,953.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,531.33 : 182,315.21 = 42,631.66 : x
  2. Step 2: Convert to fraction form
    121,531.33/182,315.21 = 42,631.66/x
  3. Step 3: Cross multiply
    121,531.33x = 182,315.21 × 42,631.66
  4. Step 4: Simplify right side
    121,531.33x = 7,772,400,045.55
  5. Step 5: Solve for x
    x = 7,772,400,045.55/121,531.33
  6. Step 6: Final answer
    x = 63,953.88

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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.