Home / 131,990.62-182,129.64-74,637.76

Finding the Fourth Proportional to 131,990.62, 182,129.64 and 74,637.76

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Solution

The fourth proportional to 131,990.62, 182,129.64 and 74,637.76 is: 102,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,990.62 : 182,129.64 = 74,637.76 : x
  2. Step 2: Convert to fraction form
    131,990.62/182,129.64 = 74,637.76/x
  3. Step 3: Cross multiply
    131,990.62x = 182,129.64 × 74,637.76
  4. Step 4: Simplify right side
    131,990.62x = 13,593,748,359.21
  5. Step 5: Solve for x
    x = 13,593,748,359.21/131,990.62
  6. Step 6: Final answer
    x = 102,990.26

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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.