Home / 120,022.59-165,629.70-66,303.81

Finding the Fourth Proportional to 120,022.59, 165,629.70 and 66,303.81

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Solution

The fourth proportional to 120,022.59, 165,629.70 and 66,303.81 is: 91,498.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,022.59 : 165,629.70 = 66,303.81 : x
  2. Step 2: Convert to fraction form
    120,022.59/165,629.70 = 66,303.81/x
  3. Step 3: Cross multiply
    120,022.59x = 165,629.70 × 66,303.81
  4. Step 4: Simplify right side
    120,022.59x = 10,981,880,159.16
  5. Step 5: Solve for x
    x = 10,981,880,159.16/120,022.59
  6. Step 6: Final answer
    x = 91,498.44

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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.