Home / 135,621.16-187,168.24-75,210.72

Finding the Fourth Proportional to 135,621.16, 187,168.24 and 75,210.72

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Solution

The fourth proportional to 135,621.16, 187,168.24 and 75,210.72 is: 103,796.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,621.16 : 187,168.24 = 75,210.72 : x
  2. Step 2: Convert to fraction form
    135,621.16/187,168.24 = 75,210.72/x
  3. Step 3: Cross multiply
    135,621.16x = 187,168.24 × 75,210.72
  4. Step 4: Simplify right side
    135,621.16x = 14,077,058,091.53
  5. Step 5: Solve for x
    x = 14,077,058,091.53/135,621.16
  6. Step 6: Final answer
    x = 103,796.92

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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.