Home / 190,631.94-286,040.25-78,395.10

Finding the Fourth Proportional to 190,631.94, 286,040.25 and 78,395.10

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Solution

The fourth proportional to 190,631.94, 286,040.25 and 78,395.10 is: 117,630.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,631.94 : 286,040.25 = 78,395.10 : x
  2. Step 2: Convert to fraction form
    190,631.94/286,040.25 = 78,395.10/x
  3. Step 3: Cross multiply
    190,631.94x = 286,040.25 × 78,395.10
  4. Step 4: Simplify right side
    190,631.94x = 22,424,154,002.78
  5. Step 5: Solve for x
    x = 22,424,154,002.78/190,631.94
  6. Step 6: Final answer
    x = 117,630.62

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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.