Home / 143,612.75-198,056.57-89,902.65

Finding the Fourth Proportional to 143,612.75, 198,056.57 and 89,902.65

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Solution

The fourth proportional to 143,612.75, 198,056.57 and 89,902.65 is: 123,984.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,612.75 : 198,056.57 = 89,902.65 : x
  2. Step 2: Convert to fraction form
    143,612.75/198,056.57 = 89,902.65/x
  3. Step 3: Cross multiply
    143,612.75x = 198,056.57 × 89,902.65
  4. Step 4: Simplify right side
    143,612.75x = 17,805,810,043.40
  5. Step 5: Solve for x
    x = 17,805,810,043.40/143,612.75
  6. Step 6: Final answer
    x = 123,984.89

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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.