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Finding the Fourth Proportional to 143,955.68, 198,657.88 and 79,428.24

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Solution

The fourth proportional to 143,955.68, 198,657.88 and 79,428.24 is: 109,610.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,955.68 : 198,657.88 = 79,428.24 : x
  2. Step 2: Convert to fraction form
    143,955.68/198,657.88 = 79,428.24/x
  3. Step 3: Cross multiply
    143,955.68x = 198,657.88 × 79,428.24
  4. Step 4: Simplify right side
    143,955.68x = 15,779,045,770.53
  5. Step 5: Solve for x
    x = 15,779,045,770.53/143,955.68
  6. Step 6: Final answer
    x = 109,610.44

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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.