Home / 256,095.10-384,139.56-66,538.69

Finding the Fourth Proportional to 256,095.10, 384,139.56 and 66,538.69

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Solution

The fourth proportional to 256,095.10, 384,139.56 and 66,538.69 is: 99,807.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,095.10 : 384,139.56 = 66,538.69 : x
  2. Step 2: Convert to fraction form
    256,095.10/384,139.56 = 66,538.69/x
  3. Step 3: Cross multiply
    256,095.10x = 384,139.56 × 66,538.69
  4. Step 4: Simplify right side
    256,095.10x = 25,560,143,099.58
  5. Step 5: Solve for x
    x = 25,560,143,099.58/256,095.10
  6. Step 6: Final answer
    x = 99,807.23

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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.