Home / 142,048.20-213,072.30-79,710.60

Finding the Fourth Proportional to 142,048.20, 213,072.30 and 79,710.60

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Solution

The fourth proportional to 142,048.20, 213,072.30 and 79,710.60 is: 119,565.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,048.20 : 213,072.30 = 79,710.60 : x
  2. Step 2: Convert to fraction form
    142,048.20/213,072.30 = 79,710.60/x
  3. Step 3: Cross multiply
    142,048.20x = 213,072.30 × 79,710.60
  4. Step 4: Simplify right side
    142,048.20x = 16,984,120,876.38
  5. Step 5: Solve for x
    x = 16,984,120,876.38/142,048.20
  6. Step 6: Final answer
    x = 119,565.90

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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.