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Finding the Fourth Proportional to 121,689.90, 182,555.55 and 37,448.15

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Solution

The fourth proportional to 121,689.90, 182,555.55 and 37,448.15 is: 56,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,689.90 : 182,555.55 = 37,448.15 : x
  2. Step 2: Convert to fraction form
    121,689.90/182,555.55 = 37,448.15/x
  3. Step 3: Cross multiply
    121,689.90x = 182,555.55 × 37,448.15
  4. Step 4: Simplify right side
    121,689.90x = 6,836,366,706.95
  5. Step 5: Solve for x
    x = 6,836,366,706.95/121,689.90
  6. Step 6: Final answer
    x = 56,178.59

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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.