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Finding the Fourth Proportional to 143,580.96, 198,118.08 and 79,917.12

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Solution

The fourth proportional to 143,580.96, 198,118.08 and 79,917.12 is: 110,272.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,580.96 : 198,118.08 = 79,917.12 : x
  2. Step 2: Convert to fraction form
    143,580.96/198,118.08 = 79,917.12/x
  3. Step 3: Cross multiply
    143,580.96x = 198,118.08 × 79,917.12
  4. Step 4: Simplify right side
    143,580.96x = 15,833,026,373.53
  5. Step 5: Solve for x
    x = 15,833,026,373.53/143,580.96
  6. Step 6: Final answer
    x = 110,272.46

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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.