Home / 207,769.68-286,686-122,855.76

Finding the Fourth Proportional to 207,769.68, 286,686 and 122,855.76

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Solution

The fourth proportional to 207,769.68, 286,686 and 122,855.76 is: 169,519.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,769.68 : 286,686 = 122,855.76 : x
  2. Step 2: Convert to fraction form
    207,769.68/286,686 = 122,855.76/x
  3. Step 3: Cross multiply
    207,769.68x = 286,686 × 122,855.76
  4. Step 4: Simplify right side
    207,769.68x = 35,221,026,411.36
  5. Step 5: Solve for x
    x = 35,221,026,411.36/207,769.68
  6. Step 6: Final answer
    x = 169,519.57

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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.