Home / 135,539.80-187,111.02-90,244.60

Finding the Fourth Proportional to 135,539.80, 187,111.02 and 90,244.60

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Solution

The fourth proportional to 135,539.80, 187,111.02 and 90,244.60 is: 124,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,539.80 : 187,111.02 = 90,244.60 : x
  2. Step 2: Convert to fraction form
    135,539.80/187,111.02 = 90,244.60/x
  3. Step 3: Cross multiply
    135,539.80x = 187,111.02 × 90,244.60
  4. Step 4: Simplify right side
    135,539.80x = 16,885,759,155.49
  5. Step 5: Solve for x
    x = 16,885,759,155.49/135,539.80
  6. Step 6: Final answer
    x = 124,581.56

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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.