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Finding the Fourth Proportional to 143,554.80, 214,821.90 and 125,038.20

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Solution

The fourth proportional to 143,554.80, 214,821.90 and 125,038.20 is: 187,112.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,554.80 : 214,821.90 = 125,038.20 : x
  2. Step 2: Convert to fraction form
    143,554.80/214,821.90 = 125,038.20/x
  3. Step 3: Cross multiply
    143,554.80x = 214,821.90 × 125,038.20
  4. Step 4: Simplify right side
    143,554.80x = 26,860,943,696.58
  5. Step 5: Solve for x
    x = 26,860,943,696.58/143,554.80
  6. Step 6: Final answer
    x = 187,112.82

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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.