Home / 142,122.20-212,924.10-115,683.80

Finding the Fourth Proportional to 142,122.20, 212,924.10 and 115,683.80

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Solution

The fourth proportional to 142,122.20, 212,924.10 and 115,683.80 is: 173,314.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,122.20 : 212,924.10 = 115,683.80 : x
  2. Step 2: Convert to fraction form
    142,122.20/212,924.10 = 115,683.80/x
  3. Step 3: Cross multiply
    142,122.20x = 212,924.10 × 115,683.80
  4. Step 4: Simplify right side
    142,122.20x = 24,631,868,999.58
  5. Step 5: Solve for x
    x = 24,631,868,999.58/142,122.20
  6. Step 6: Final answer
    x = 173,314.72

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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.