Home / 103,118.61-142,291.02-62,817.75

Finding the Fourth Proportional to 103,118.61, 142,291.02 and 62,817.75

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Solution

The fourth proportional to 103,118.61, 142,291.02 and 62,817.75 is: 86,680.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,118.61 : 142,291.02 = 62,817.75 : x
  2. Step 2: Convert to fraction form
    103,118.61/142,291.02 = 62,817.75/x
  3. Step 3: Cross multiply
    103,118.61x = 142,291.02 × 62,817.75
  4. Step 4: Simplify right side
    103,118.61x = 8,938,401,721.61
  5. Step 5: Solve for x
    x = 8,938,401,721.61/103,118.61
  6. Step 6: Final answer
    x = 86,680.78

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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.