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Finding the Fourth Proportional to 129,888.48, 194,834.14 and 45,651.05

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Solution

The fourth proportional to 129,888.48, 194,834.14 and 45,651.05 is: 68,477.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,888.48 : 194,834.14 = 45,651.05 : x
  2. Step 2: Convert to fraction form
    129,888.48/194,834.14 = 45,651.05/x
  3. Step 3: Cross multiply
    129,888.48x = 194,834.14 × 45,651.05
  4. Step 4: Simplify right side
    129,888.48x = 8,894,381,978.55
  5. Step 5: Solve for x
    x = 8,894,381,978.55/129,888.48
  6. Step 6: Final answer
    x = 68,477.07

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1.5x scale

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.