Home / 135,639.02-187,184.09-75,212.21

Finding the Fourth Proportional to 135,639.02, 187,184.09 and 75,212.21

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Solution

The fourth proportional to 135,639.02, 187,184.09 and 75,212.21 is: 103,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,639.02 : 187,184.09 = 75,212.21 : x
  2. Step 2: Convert to fraction form
    135,639.02/187,184.09 = 75,212.21/x
  3. Step 3: Cross multiply
    135,639.02x = 187,184.09 × 75,212.21
  4. Step 4: Simplify right side
    135,639.02x = 14,078,529,741.73
  5. Step 5: Solve for x
    x = 14,078,529,741.73/135,639.02
  6. Step 6: Final answer
    x = 103,794.10

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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.