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Finding the Fourth Proportional to 129,369.55, 194,056.02 and 40,623.01

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Solution

The fourth proportional to 129,369.55, 194,056.02 and 40,623.01 is: 60,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,369.55 : 194,056.02 = 40,623.01 : x
  2. Step 2: Convert to fraction form
    129,369.55/194,056.02 = 40,623.01/x
  3. Step 3: Cross multiply
    129,369.55x = 194,056.02 × 40,623.01
  4. Step 4: Simplify right side
    129,369.55x = 7,883,139,641.02
  5. Step 5: Solve for x
    x = 7,883,139,641.02/129,369.55
  6. Step 6: Final answer
    x = 60,935.05

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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.