Home / 143,339.90-214,805.66-105,603.20

Finding the Fourth Proportional to 143,339.90, 214,805.66 and 105,603.20

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Solution

The fourth proportional to 143,339.90, 214,805.66 and 105,603.20 is: 158,254.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,339.90 : 214,805.66 = 105,603.20 : x
  2. Step 2: Convert to fraction form
    143,339.90/214,805.66 = 105,603.20/x
  3. Step 3: Cross multiply
    143,339.90x = 214,805.66 × 105,603.20
  4. Step 4: Simplify right side
    143,339.90x = 22,684,165,074.11
  5. Step 5: Solve for x
    x = 22,684,165,074.11/143,339.90
  6. Step 6: Final answer
    x = 158,254.37

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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.