Home / 190,123.28-285,184.52-77,855.84

Finding the Fourth Proportional to 190,123.28, 285,184.52 and 77,855.84

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Solution

The fourth proportional to 190,123.28, 285,184.52 and 77,855.84 is: 116,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,123.28 : 285,184.52 = 77,855.84 : x
  2. Step 2: Convert to fraction form
    190,123.28/285,184.52 = 77,855.84/x
  3. Step 3: Cross multiply
    190,123.28x = 285,184.52 × 77,855.84
  4. Step 4: Simplify right side
    190,123.28x = 22,203,280,359.60
  5. Step 5: Solve for x
    x = 22,203,280,359.60/190,123.28
  6. Step 6: Final answer
    x = 116,783.60

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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.