Home / 131,828.72-181,909.04-74,461.92

Finding the Fourth Proportional to 131,828.72, 181,909.04 and 74,461.92

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Solution

The fourth proportional to 131,828.72, 181,909.04 and 74,461.92 is: 102,749.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,828.72 : 181,909.04 = 74,461.92 : x
  2. Step 2: Convert to fraction form
    131,828.72/181,909.04 = 74,461.92/x
  3. Step 3: Cross multiply
    131,828.72x = 181,909.04 × 74,461.92
  4. Step 4: Simplify right side
    131,828.72x = 13,545,296,383.76
  5. Step 5: Solve for x
    x = 13,545,296,383.76/131,828.72
  6. Step 6: Final answer
    x = 102,749.21

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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.