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Finding the Fourth Proportional to 129,903.68, 194,860.99 and 41,155.22

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Solution

The fourth proportional to 129,903.68, 194,860.99 and 41,155.22 is: 61,734.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,903.68 : 194,860.99 = 41,155.22 : x
  2. Step 2: Convert to fraction form
    129,903.68/194,860.99 = 41,155.22/x
  3. Step 3: Cross multiply
    129,903.68x = 194,860.99 × 41,155.22
  4. Step 4: Simplify right side
    129,903.68x = 8,019,547,451.46
  5. Step 5: Solve for x
    x = 8,019,547,451.46/129,903.68
  6. Step 6: Final answer
    x = 61,734.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.