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Finding the Fourth Proportional to 166,408.70, 249,612.44 and 77,612.85

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Solution

The fourth proportional to 166,408.70, 249,612.44 and 77,612.85 is: 116,418.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,408.70 : 249,612.44 = 77,612.85 : x
  2. Step 2: Convert to fraction form
    166,408.70/249,612.44 = 77,612.85/x
  3. Step 3: Cross multiply
    166,408.70x = 249,612.44 × 77,612.85
  4. Step 4: Simplify right side
    166,408.70x = 19,373,132,475.79
  5. Step 5: Solve for x
    x = 19,373,132,475.79/166,408.70
  6. Step 6: Final answer
    x = 116,418.99

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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.