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Finding the Fourth Proportional to 143,673.68, 198,255.48 and 80,017.40

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Solution

The fourth proportional to 143,673.68, 198,255.48 and 80,017.40 is: 110,416.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,673.68 : 198,255.48 = 80,017.40 : x
  2. Step 2: Convert to fraction form
    143,673.68/198,255.48 = 80,017.40/x
  3. Step 3: Cross multiply
    143,673.68x = 198,255.48 × 80,017.40
  4. Step 4: Simplify right side
    143,673.68x = 15,863,887,749.76
  5. Step 5: Solve for x
    x = 15,863,887,749.76/143,673.68
  6. Step 6: Final answer
    x = 110,416.10

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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.