Home / 100,419.30-138,566.93-60,127.47

Finding the Fourth Proportional to 100,419.30, 138,566.93 and 60,127.47

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Solution

The fourth proportional to 100,419.30, 138,566.93 and 60,127.47 is: 82,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,419.30 : 138,566.93 = 60,127.47 : x
  2. Step 2: Convert to fraction form
    100,419.30/138,566.93 = 60,127.47/x
  3. Step 3: Cross multiply
    100,419.30x = 138,566.93 × 60,127.47
  4. Step 4: Simplify right side
    100,419.30x = 8,331,678,625.93
  5. Step 5: Solve for x
    x = 8,331,678,625.93/100,419.30
  6. Step 6: Final answer
    x = 82,968.90

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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.