Home / 190,724.56-286,047.64-78,295.12

Finding the Fourth Proportional to 190,724.56, 286,047.64 and 78,295.12

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Solution

The fourth proportional to 190,724.56, 286,047.64 and 78,295.12 is: 117,426.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,724.56 : 286,047.64 = 78,295.12 : x
  2. Step 2: Convert to fraction form
    190,724.56/286,047.64 = 78,295.12/x
  3. Step 3: Cross multiply
    190,724.56x = 286,047.64 × 78,295.12
  4. Step 4: Simplify right side
    190,724.56x = 22,396,134,299.52
  5. Step 5: Solve for x
    x = 22,396,134,299.52/190,724.56
  6. Step 6: Final answer
    x = 117,426.59

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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.