Home / 103,431.30-142,753.77-60,987.30

Finding the Fourth Proportional to 103,431.30, 142,753.77 and 60,987.30

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Solution

The fourth proportional to 103,431.30, 142,753.77 and 60,987.30 is: 84,173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,431.30 : 142,753.77 = 60,987.30 : x
  2. Step 2: Convert to fraction form
    103,431.30/142,753.77 = 60,987.30/x
  3. Step 3: Cross multiply
    103,431.30x = 142,753.77 × 60,987.30
  4. Step 4: Simplify right side
    103,431.30x = 8,706,166,997.12
  5. Step 5: Solve for x
    x = 8,706,166,997.12/103,431.30
  6. Step 6: Final answer
    x = 84,173.43

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1.5x scale

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.