Home / 135,187.28-186,572.46-77,828.64

Finding the Fourth Proportional to 135,187.28, 186,572.46 and 77,828.64

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Solution

The fourth proportional to 135,187.28, 186,572.46 and 77,828.64 is: 107,411.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,187.28 : 186,572.46 = 77,828.64 : x
  2. Step 2: Convert to fraction form
    135,187.28/186,572.46 = 77,828.64/x
  3. Step 3: Cross multiply
    135,187.28x = 186,572.46 × 77,828.64
  4. Step 4: Simplify right side
    135,187.28x = 14,520,680,823.25
  5. Step 5: Solve for x
    x = 14,520,680,823.25/135,187.28
  6. Step 6: Final answer
    x = 107,411.59

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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.