Home / 135,485.76-187,001.46-90,165.66

Finding the Fourth Proportional to 135,485.76, 187,001.46 and 90,165.66

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Solution

The fourth proportional to 135,485.76, 187,001.46 and 90,165.66 is: 124,449.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,485.76 : 187,001.46 = 90,165.66 : x
  2. Step 2: Convert to fraction form
    135,485.76/187,001.46 = 90,165.66/x
  3. Step 3: Cross multiply
    135,485.76x = 187,001.46 × 90,165.66
  4. Step 4: Simplify right side
    135,485.76x = 16,861,109,360.61
  5. Step 5: Solve for x
    x = 16,861,109,360.61/135,485.76
  6. Step 6: Final answer
    x = 124,449.31

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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.