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Finding the Fourth Proportional to 143,858.88, 198,526.12 and 80,200.72

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Solution

The fourth proportional to 143,858.88, 198,526.12 and 80,200.72 is: 110,677.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,858.88 : 198,526.12 = 80,200.72 : x
  2. Step 2: Convert to fraction form
    143,858.88/198,526.12 = 80,200.72/x
  3. Step 3: Cross multiply
    143,858.88x = 198,526.12 × 80,200.72
  4. Step 4: Simplify right side
    143,858.88x = 15,921,937,762.81
  5. Step 5: Solve for x
    x = 15,921,937,762.81/143,858.88
  6. Step 6: Final answer
    x = 110,677.48

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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.