Home / 145,270.74-217,906.11-66,363.78

Finding the Fourth Proportional to 145,270.74, 217,906.11 and 66,363.78

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Solution

The fourth proportional to 145,270.74, 217,906.11 and 66,363.78 is: 99,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,270.74 : 217,906.11 = 66,363.78 : x
  2. Step 2: Convert to fraction form
    145,270.74/217,906.11 = 66,363.78/x
  3. Step 3: Cross multiply
    145,270.74x = 217,906.11 × 66,363.78
  4. Step 4: Simplify right side
    145,270.74x = 14,461,073,144.70
  5. Step 5: Solve for x
    x = 14,461,073,144.70/145,270.74
  6. Step 6: Final answer
    x = 99,545.67

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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.