Home / 135,021.48-186,326.05-74,582.37

Finding the Fourth Proportional to 135,021.48, 186,326.05 and 74,582.37

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Solution

The fourth proportional to 135,021.48, 186,326.05 and 74,582.37 is: 102,921.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,021.48 : 186,326.05 = 74,582.37 : x
  2. Step 2: Convert to fraction form
    135,021.48/186,326.05 = 74,582.37/x
  3. Step 3: Cross multiply
    135,021.48x = 186,326.05 × 74,582.37
  4. Step 4: Simplify right side
    135,021.48x = 13,896,638,401.74
  5. Step 5: Solve for x
    x = 13,896,638,401.74/135,021.48
  6. Step 6: Final answer
    x = 102,921.69

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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.