Home / 135,148.97-186,509.47-74,723.51

Finding the Fourth Proportional to 135,148.97, 186,509.47 and 74,723.51

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Solution

The fourth proportional to 135,148.97, 186,509.47 and 74,723.51 is: 103,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,148.97 : 186,509.47 = 74,723.51 : x
  2. Step 2: Convert to fraction form
    135,148.97/186,509.47 = 74,723.51/x
  3. Step 3: Cross multiply
    135,148.97x = 186,509.47 × 74,723.51
  4. Step 4: Simplify right side
    135,148.97x = 13,936,642,059.83
  5. Step 5: Solve for x
    x = 13,936,642,059.83/135,148.97
  6. Step 6: Final answer
    x = 103,120.60

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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.