Home / 142,111.16-212,772.90-71,843.60

Finding the Fourth Proportional to 142,111.16, 212,772.90 and 71,843.60

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Solution

The fourth proportional to 142,111.16, 212,772.90 and 71,843.60 is: 107,566.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,111.16 : 212,772.90 = 71,843.60 : x
  2. Step 2: Convert to fraction form
    142,111.16/212,772.90 = 71,843.60/x
  3. Step 3: Cross multiply
    142,111.16x = 212,772.90 × 71,843.60
  4. Step 4: Simplify right side
    142,111.16x = 15,286,371,118.44
  5. Step 5: Solve for x
    x = 15,286,371,118.44/142,111.16
  6. Step 6: Final answer
    x = 107,566.30

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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.