Home / 135,435.51-186,838.96-87,704.23

Finding the Fourth Proportional to 135,435.51, 186,838.96 and 87,704.23

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Solution

The fourth proportional to 135,435.51, 186,838.96 and 87,704.23 is: 120,991.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,435.51 : 186,838.96 = 87,704.23 : x
  2. Step 2: Convert to fraction form
    135,435.51/186,838.96 = 87,704.23/x
  3. Step 3: Cross multiply
    135,435.51x = 186,838.96 × 87,704.23
  4. Step 4: Simplify right side
    135,435.51x = 16,386,567,120.80
  5. Step 5: Solve for x
    x = 16,386,567,120.80/135,435.51
  6. Step 6: Final answer
    x = 120,991.66

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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.