Home / 143,602.20-198,165.69-79,938.63

Finding the Fourth Proportional to 143,602.20, 198,165.69 and 79,938.63

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Solution

The fourth proportional to 143,602.20, 198,165.69 and 79,938.63 is: 110,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,602.20 : 198,165.69 = 79,938.63 : x
  2. Step 2: Convert to fraction form
    143,602.20/198,165.69 = 79,938.63/x
  3. Step 3: Cross multiply
    143,602.20x = 198,165.69 × 79,938.63
  4. Step 4: Simplify right side
    143,602.20x = 15,841,093,771.60
  5. Step 5: Solve for x
    x = 15,841,093,771.60/143,602.20
  6. Step 6: Final answer
    x = 110,312.33

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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.