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Finding the Fourth Proportional to 143,807.83, 198,813.51 and 107,935.56

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Solution

The fourth proportional to 143,807.83, 198,813.51 and 107,935.56 is: 149,220.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,807.83 : 198,813.51 = 107,935.56 : x
  2. Step 2: Convert to fraction form
    143,807.83/198,813.51 = 107,935.56/x
  3. Step 3: Cross multiply
    143,807.83x = 198,813.51 × 107,935.56
  4. Step 4: Simplify right side
    143,807.83x = 21,459,047,537.42
  5. Step 5: Solve for x
    x = 21,459,047,537.42/143,807.83
  6. Step 6: Final answer
    x = 149,220.30

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1.5x scale

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.