Home / 135,555.80-187,133.10-90,260.60

Finding the Fourth Proportional to 135,555.80, 187,133.10 and 90,260.60

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Solution

The fourth proportional to 135,555.80, 187,133.10 and 90,260.60 is: 124,603.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,555.80 : 187,133.10 = 90,260.60 : x
  2. Step 2: Convert to fraction form
    135,555.80/187,133.10 = 90,260.60/x
  3. Step 3: Cross multiply
    135,555.80x = 187,133.10 × 90,260.60
  4. Step 4: Simplify right side
    135,555.80x = 16,890,745,885.86
  5. Step 5: Solve for x
    x = 16,890,745,885.86/135,555.80
  6. Step 6: Final answer
    x = 124,603.64

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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.