Home / 103,511.67-142,851.24-63,218.90

Finding the Fourth Proportional to 103,511.67, 142,851.24 and 63,218.90

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Solution

The fourth proportional to 103,511.67, 142,851.24 and 63,218.90 is: 87,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,511.67 : 142,851.24 = 63,218.90 : x
  2. Step 2: Convert to fraction form
    103,511.67/142,851.24 = 63,218.90/x
  3. Step 3: Cross multiply
    103,511.67x = 142,851.24 × 63,218.90
  4. Step 4: Simplify right side
    103,511.67x = 9,030,897,542.18
  5. Step 5: Solve for x
    x = 9,030,897,542.18/103,511.67
  6. Step 6: Final answer
    x = 87,245.21

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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.