Home / 135,215.52-186,590.09-74,782.64

Finding the Fourth Proportional to 135,215.52, 186,590.09 and 74,782.64

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Solution

The fourth proportional to 135,215.52, 186,590.09 and 74,782.64 is: 103,195.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,215.52 : 186,590.09 = 74,782.64 : x
  2. Step 2: Convert to fraction form
    135,215.52/186,590.09 = 74,782.64/x
  3. Step 3: Cross multiply
    135,215.52x = 186,590.09 × 74,782.64
  4. Step 4: Simplify right side
    135,215.52x = 13,953,698,221.17
  5. Step 5: Solve for x
    x = 13,953,698,221.17/135,215.52
  6. Step 6: Final answer
    x = 103,195.98

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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.