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Finding the Fourth Proportional to 143,608.74, 198,051.05 and 89,898.65

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Solution

The fourth proportional to 143,608.74, 198,051.05 and 89,898.65 is: 123,979.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,608.74 : 198,051.05 = 89,898.65 : x
  2. Step 2: Convert to fraction form
    143,608.74/198,051.05 = 89,898.65/x
  3. Step 3: Cross multiply
    143,608.74x = 198,051.05 × 89,898.65
  4. Step 4: Simplify right side
    143,608.74x = 17,804,521,576.59
  5. Step 5: Solve for x
    x = 17,804,521,576.59/143,608.74
  6. Step 6: Final answer
    x = 123,979.37

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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.