Home / 117,384.29-161,861.94-87,225.56

Finding the Fourth Proportional to 117,384.29, 161,861.94 and 87,225.56

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Solution

The fourth proportional to 117,384.29, 161,861.94 and 87,225.56 is: 120,275.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,384.29 : 161,861.94 = 87,225.56 : x
  2. Step 2: Convert to fraction form
    117,384.29/161,861.94 = 87,225.56/x
  3. Step 3: Cross multiply
    117,384.29x = 161,861.94 × 87,225.56
  4. Step 4: Simplify right side
    117,384.29x = 14,118,497,736.47
  5. Step 5: Solve for x
    x = 14,118,497,736.47/117,384.29
  6. Step 6: Final answer
    x = 120,275.87

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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.