Home / 210,833.11-290,956.54-115,339.80

Finding the Fourth Proportional to 210,833.11, 290,956.54 and 115,339.80

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Solution

The fourth proportional to 210,833.11, 290,956.54 and 115,339.80 is: 159,172.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,833.11 : 290,956.54 = 115,339.80 : x
  2. Step 2: Convert to fraction form
    210,833.11/290,956.54 = 115,339.80/x
  3. Step 3: Cross multiply
    210,833.11x = 290,956.54 × 115,339.80
  4. Step 4: Simplify right side
    210,833.11x = 33,558,869,132.29
  5. Step 5: Solve for x
    x = 33,558,869,132.29/210,833.11
  6. Step 6: Final answer
    x = 159,172.67

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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.