Home / 127,861.70-191,792.55-77,123.30

Finding the Fourth Proportional to 127,861.70, 191,792.55 and 77,123.30

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Solution

The fourth proportional to 127,861.70, 191,792.55 and 77,123.30 is: 115,684.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,861.70 : 191,792.55 = 77,123.30 : x
  2. Step 2: Convert to fraction form
    127,861.70/191,792.55 = 77,123.30/x
  3. Step 3: Cross multiply
    127,861.70x = 191,792.55 × 77,123.30
  4. Step 4: Simplify right side
    127,861.70x = 14,791,674,371.42
  5. Step 5: Solve for x
    x = 14,791,674,371.42/127,861.70
  6. Step 6: Final answer
    x = 115,684.95

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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.