Home / 190,463.36-285,754.28-78,152.72

Finding the Fourth Proportional to 190,463.36, 285,754.28 and 78,152.72

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Solution

The fourth proportional to 190,463.36, 285,754.28 and 78,152.72 is: 117,253.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,463.36 : 285,754.28 = 78,152.72 : x
  2. Step 2: Convert to fraction form
    190,463.36/285,754.28 = 78,152.72/x
  3. Step 3: Cross multiply
    190,463.36x = 285,754.28 × 78,152.72
  4. Step 4: Simplify right side
    190,463.36x = 22,332,472,414.11
  5. Step 5: Solve for x
    x = 22,332,472,414.11/190,463.36
  6. Step 6: Final answer
    x = 117,253.38

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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.