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Finding the Fourth Proportional to 133,681, 200,461.58 and 79,671.20

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Solution

The fourth proportional to 133,681, 200,461.58 and 79,671.20 is: 119,471.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,681 : 200,461.58 = 79,671.20 : x
  2. Step 2: Convert to fraction form
    133,681/200,461.58 = 79,671.20/x
  3. Step 3: Cross multiply
    133,681x = 200,461.58 × 79,671.20
  4. Step 4: Simplify right side
    133,681x = 15,971,014,632.50
  5. Step 5: Solve for x
    x = 15,971,014,632.50/133,681
  6. Step 6: Final answer
    x = 119,471.09

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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.