Home / 135,007.31-186,336.05-77,685.23

Finding the Fourth Proportional to 135,007.31, 186,336.05 and 77,685.23

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Solution

The fourth proportional to 135,007.31, 186,336.05 and 77,685.23 is: 107,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,007.31 : 186,336.05 = 77,685.23 : x
  2. Step 2: Convert to fraction form
    135,007.31/186,336.05 = 77,685.23/x
  3. Step 3: Cross multiply
    135,007.31x = 186,336.05 × 77,685.23
  4. Step 4: Simplify right side
    135,007.31x = 14,475,557,581.44
  5. Step 5: Solve for x
    x = 14,475,557,581.44/135,007.31
  6. Step 6: Final answer
    x = 107,220.55

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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.