Home / 103,173.88-142,388.60-57,851.16

Finding the Fourth Proportional to 103,173.88, 142,388.60 and 57,851.16

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Solution

The fourth proportional to 103,173.88, 142,388.60 and 57,851.16 is: 79,839.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,173.88 : 142,388.60 = 57,851.16 : x
  2. Step 2: Convert to fraction form
    103,173.88/142,388.60 = 57,851.16/x
  3. Step 3: Cross multiply
    103,173.88x = 142,388.60 × 57,851.16
  4. Step 4: Simplify right side
    103,173.88x = 8,237,345,680.78
  5. Step 5: Solve for x
    x = 8,237,345,680.78/103,173.88
  6. Step 6: Final answer
    x = 79,839.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.