Home / 211,331.16-316,921.41-69,142.14

Finding the Fourth Proportional to 211,331.16, 316,921.41 and 69,142.14

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Solution

The fourth proportional to 211,331.16, 316,921.41 and 69,142.14 is: 103,688.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,331.16 : 316,921.41 = 69,142.14 : x
  2. Step 2: Convert to fraction form
    211,331.16/316,921.41 = 69,142.14/x
  3. Step 3: Cross multiply
    211,331.16x = 316,921.41 × 69,142.14
  4. Step 4: Simplify right side
    211,331.16x = 21,912,624,499.22
  5. Step 5: Solve for x
    x = 21,912,624,499.22/211,331.16
  6. Step 6: Final answer
    x = 103,688.56

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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.