Home / 190,693.56-286,132.50-78,456.60

Finding the Fourth Proportional to 190,693.56, 286,132.50 and 78,456.60

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Solution

The fourth proportional to 190,693.56, 286,132.50 and 78,456.60 is: 117,722.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,693.56 : 286,132.50 = 78,456.60 : x
  2. Step 2: Convert to fraction form
    190,693.56/286,132.50 = 78,456.60/x
  3. Step 3: Cross multiply
    190,693.56x = 286,132.50 × 78,456.60
  4. Step 4: Simplify right side
    190,693.56x = 22,448,983,099.50
  5. Step 5: Solve for x
    x = 22,448,983,099.50/190,693.56
  6. Step 6: Final answer
    x = 117,722.82

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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.