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Finding the Fourth Proportional to 166,153.70, 249,230.55 and 81,954.20

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Solution

The fourth proportional to 166,153.70, 249,230.55 and 81,954.20 is: 122,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,153.70 : 249,230.55 = 81,954.20 : x
  2. Step 2: Convert to fraction form
    166,153.70/249,230.55 = 81,954.20/x
  3. Step 3: Cross multiply
    166,153.70x = 249,230.55 × 81,954.20
  4. Step 4: Simplify right side
    166,153.70x = 20,425,490,340.81
  5. Step 5: Solve for x
    x = 20,425,490,340.81/166,153.70
  6. Step 6: Final answer
    x = 122,931.30

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Similar ratio
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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.