Home / 239,012.01-358,296.57-81,129.76

Finding the Fourth Proportional to 239,012.01, 358,296.57 and 81,129.76

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Solution

The fourth proportional to 239,012.01, 358,296.57 and 81,129.76 is: 121,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,012.01 : 358,296.57 = 81,129.76 : x
  2. Step 2: Convert to fraction form
    239,012.01/358,296.57 = 81,129.76/x
  3. Step 3: Cross multiply
    239,012.01x = 358,296.57 × 81,129.76
  4. Step 4: Simplify right side
    239,012.01x = 29,068,513,837.18
  5. Step 5: Solve for x
    x = 29,068,513,837.18/239,012.01
  6. Step 6: Final answer
    x = 121,619.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.