Home / 134,580.72-185,713.92-74,139.48

Finding the Fourth Proportional to 134,580.72, 185,713.92 and 74,139.48

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Solution

The fourth proportional to 134,580.72, 185,713.92 and 74,139.48 is: 102,308.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,580.72 : 185,713.92 = 74,139.48 : x
  2. Step 2: Convert to fraction form
    134,580.72/185,713.92 = 74,139.48/x
  3. Step 3: Cross multiply
    134,580.72x = 185,713.92 × 74,139.48
  4. Step 4: Simplify right side
    134,580.72x = 13,768,733,457.56
  5. Step 5: Solve for x
    x = 13,768,733,457.56/134,580.72
  6. Step 6: Final answer
    x = 102,308.37

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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.