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Finding the Fourth Proportional to 133,312.12, 200,041.99 and 79,872.77

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Solution

The fourth proportional to 133,312.12, 200,041.99 and 79,872.77 is: 119,853.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,312.12 : 200,041.99 = 79,872.77 : x
  2. Step 2: Convert to fraction form
    133,312.12/200,041.99 = 79,872.77/x
  3. Step 3: Cross multiply
    133,312.12x = 200,041.99 × 79,872.77
  4. Step 4: Simplify right side
    133,312.12x = 15,977,908,158.04
  5. Step 5: Solve for x
    x = 15,977,908,158.04/133,312.12
  6. Step 6: Final answer
    x = 119,853.38

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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.