Home / 190,663.13-285,995.05-78,265.01

Finding the Fourth Proportional to 190,663.13, 285,995.05 and 78,265.01

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Solution

The fourth proportional to 190,663.13, 285,995.05 and 78,265.01 is: 117,397.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,663.13 : 285,995.05 = 78,265.01 : x
  2. Step 2: Convert to fraction form
    190,663.13/285,995.05 = 78,265.01/x
  3. Step 3: Cross multiply
    190,663.13x = 285,995.05 × 78,265.01
  4. Step 4: Simplify right side
    190,663.13x = 22,383,405,967.53
  5. Step 5: Solve for x
    x = 22,383,405,967.53/190,663.13
  6. Step 6: Final answer
    x = 117,397.66

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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.