Home / 141,829.20-212,743.80-79,491.60

Finding the Fourth Proportional to 141,829.20, 212,743.80 and 79,491.60

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Solution

The fourth proportional to 141,829.20, 212,743.80 and 79,491.60 is: 119,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,829.20 : 212,743.80 = 79,491.60 : x
  2. Step 2: Convert to fraction form
    141,829.20/212,743.80 = 79,491.60/x
  3. Step 3: Cross multiply
    141,829.20x = 212,743.80 × 79,491.60
  4. Step 4: Simplify right side
    141,829.20x = 16,911,345,052.08
  5. Step 5: Solve for x
    x = 16,911,345,052.08/141,829.20
  6. Step 6: Final answer
    x = 119,237.40

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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.