Home / 135,509.45-187,009.04-75,080.08

Finding the Fourth Proportional to 135,509.45, 187,009.04 and 75,080.08

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Solution

The fourth proportional to 135,509.45, 187,009.04 and 75,080.08 is: 103,613.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,509.45 : 187,009.04 = 75,080.08 : x
  2. Step 2: Convert to fraction form
    135,509.45/187,009.04 = 75,080.08/x
  3. Step 3: Cross multiply
    135,509.45x = 187,009.04 × 75,080.08
  4. Step 4: Simplify right side
    135,509.45x = 14,040,652,841.00
  5. Step 5: Solve for x
    x = 14,040,652,841.00/135,509.45
  6. Step 6: Final answer
    x = 103,613.83

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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.