Home / 207,619.10-311,428.65-102,643.10

Finding the Fourth Proportional to 207,619.10, 311,428.65 and 102,643.10

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Solution

The fourth proportional to 207,619.10, 311,428.65 and 102,643.10 is: 153,964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,619.10 : 311,428.65 = 102,643.10 : x
  2. Step 2: Convert to fraction form
    207,619.10/311,428.65 = 102,643.10/x
  3. Step 3: Cross multiply
    207,619.10x = 311,428.65 × 102,643.10
  4. Step 4: Simplify right side
    207,619.10x = 31,966,002,064.82
  5. Step 5: Solve for x
    x = 31,966,002,064.82/207,619.10
  6. Step 6: Final answer
    x = 153,964.65

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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.