Home / 135,147.39-186,507.29-74,721.93

Finding the Fourth Proportional to 135,147.39, 186,507.29 and 74,721.93

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Solution

The fourth proportional to 135,147.39, 186,507.29 and 74,721.93 is: 103,118.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,147.39 : 186,507.29 = 74,721.93 : x
  2. Step 2: Convert to fraction form
    135,147.39/186,507.29 = 74,721.93/x
  3. Step 3: Cross multiply
    135,147.39x = 186,507.29 × 74,721.93
  4. Step 4: Simplify right side
    135,147.39x = 13,936,184,924.17
  5. Step 5: Solve for x
    x = 13,936,184,924.17/135,147.39
  6. Step 6: Final answer
    x = 103,118.42

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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.