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Finding the Fourth Proportional to 119,647.60, 179,470.59 and 57,128.56

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Solution

The fourth proportional to 119,647.60, 179,470.59 and 57,128.56 is: 85,692.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,647.60 : 179,470.59 = 57,128.56 : x
  2. Step 2: Convert to fraction form
    119,647.60/179,470.59 = 57,128.56/x
  3. Step 3: Cross multiply
    119,647.60x = 179,470.59 × 57,128.56
  4. Step 4: Simplify right side
    119,647.60x = 10,252,896,369.05
  5. Step 5: Solve for x
    x = 10,252,896,369.05/119,647.60
  6. Step 6: Final answer
    x = 85,692.45

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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.