Home / 142,679.57-213,836.13-53,827.20

Finding the Fourth Proportional to 142,679.57, 213,836.13 and 53,827.20

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Solution

The fourth proportional to 142,679.57, 213,836.13 and 53,827.20 is: 80,671.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,679.57 : 213,836.13 = 53,827.20 : x
  2. Step 2: Convert to fraction form
    142,679.57/213,836.13 = 53,827.20/x
  3. Step 3: Cross multiply
    142,679.57x = 213,836.13 × 53,827.20
  4. Step 4: Simplify right side
    142,679.57x = 11,510,200,136.74
  5. Step 5: Solve for x
    x = 11,510,200,136.74/142,679.57
  6. Step 6: Final answer
    x = 80,671.68

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1.5x scale

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.