Home / 190,405.48-285,606.10-78,060.60

Finding the Fourth Proportional to 190,405.48, 285,606.10 and 78,060.60

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Solution

The fourth proportional to 190,405.48, 285,606.10 and 78,060.60 is: 117,090.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,405.48 : 285,606.10 = 78,060.60 : x
  2. Step 2: Convert to fraction form
    190,405.48/285,606.10 = 78,060.60/x
  3. Step 3: Cross multiply
    190,405.48x = 285,606.10 × 78,060.60
  4. Step 4: Simplify right side
    190,405.48x = 22,294,583,529.66
  5. Step 5: Solve for x
    x = 22,294,583,529.66/190,405.48
  6. Step 6: Final answer
    x = 117,090.03

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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.