Home / 142,405.75-213,468.90-79,256.13

Finding the Fourth Proportional to 142,405.75, 213,468.90 and 79,256.13

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Solution

The fourth proportional to 142,405.75, 213,468.90 and 79,256.13 is: 118,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,405.75 : 213,468.90 = 79,256.13 : x
  2. Step 2: Convert to fraction form
    142,405.75/213,468.90 = 79,256.13/x
  3. Step 3: Cross multiply
    142,405.75x = 213,468.90 × 79,256.13
  4. Step 4: Simplify right side
    142,405.75x = 16,918,718,889.36
  5. Step 5: Solve for x
    x = 16,918,718,889.36/142,405.75
  6. Step 6: Final answer
    x = 118,806.43

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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.