Home / 210,664.71-290,722.47-115,178.49

Finding the Fourth Proportional to 210,664.71, 290,722.47 and 115,178.49

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Solution

The fourth proportional to 210,664.71, 290,722.47 and 115,178.49 is: 158,949.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,664.71 : 290,722.47 = 115,178.49 : x
  2. Step 2: Convert to fraction form
    210,664.71/290,722.47 = 115,178.49/x
  3. Step 3: Cross multiply
    210,664.71x = 290,722.47 × 115,178.49
  4. Step 4: Simplify right side
    210,664.71x = 33,484,975,103.67
  5. Step 5: Solve for x
    x = 33,484,975,103.67/210,664.71
  6. Step 6: Final answer
    x = 158,949.14

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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.