Home / 143,899.84-198,580.88-80,238.40

Finding the Fourth Proportional to 143,899.84, 198,580.88 and 80,238.40

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Solution

The fourth proportional to 143,899.84, 198,580.88 and 80,238.40 is: 110,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,899.84 : 198,580.88 = 80,238.40 : x
  2. Step 2: Convert to fraction form
    143,899.84/198,580.88 = 80,238.40/x
  3. Step 3: Cross multiply
    143,899.84x = 198,580.88 × 80,238.40
  4. Step 4: Simplify right side
    143,899.84x = 15,933,812,081.79
  5. Step 5: Solve for x
    x = 15,933,812,081.79/143,899.84
  6. Step 6: Final answer
    x = 110,728.49

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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.