Home / 142,406.75-213,470.40-79,257.13

Finding the Fourth Proportional to 142,406.75, 213,470.40 and 79,257.13

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Solution

The fourth proportional to 142,406.75, 213,470.40 and 79,257.13 is: 118,807.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,406.75 : 213,470.40 = 79,257.13 : x
  2. Step 2: Convert to fraction form
    142,406.75/213,470.40 = 79,257.13/x
  3. Step 3: Cross multiply
    142,406.75x = 213,470.40 × 79,257.13
  4. Step 4: Simplify right side
    142,406.75x = 16,919,050,176.60
  5. Step 5: Solve for x
    x = 16,919,050,176.60/142,406.75
  6. Step 6: Final answer
    x = 118,807.92

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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.