Home / 135,444.23-186,914.41-81,718.86

Finding the Fourth Proportional to 135,444.23, 186,914.41 and 81,718.86

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Solution

The fourth proportional to 135,444.23, 186,914.41 and 81,718.86 is: 112,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,444.23 : 186,914.41 = 81,718.86 : x
  2. Step 2: Convert to fraction form
    135,444.23/186,914.41 = 81,718.86/x
  3. Step 3: Cross multiply
    135,444.23x = 186,914.41 × 81,718.86
  4. Step 4: Simplify right side
    135,444.23x = 15,274,432,094.18
  5. Step 5: Solve for x
    x = 15,274,432,094.18/135,444.23
  6. Step 6: Final answer
    x = 112,772.86

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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.