Home / 210,561.81-290,575.43-115,068.51

Finding the Fourth Proportional to 210,561.81, 290,575.43 and 115,068.51

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Solution

The fourth proportional to 210,561.81, 290,575.43 and 115,068.51 is: 158,794.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,561.81 : 290,575.43 = 115,068.51 : x
  2. Step 2: Convert to fraction form
    210,561.81/290,575.43 = 115,068.51/x
  3. Step 3: Cross multiply
    210,561.81x = 290,575.43 × 115,068.51
  4. Step 4: Simplify right side
    210,561.81x = 33,436,081,628.87
  5. Step 5: Solve for x
    x = 33,436,081,628.87/210,561.81
  6. Step 6: Final answer
    x = 158,794.62

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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.