Home / 190,118.76-285,177.78-77,851.32

Finding the Fourth Proportional to 190,118.76, 285,177.78 and 77,851.32

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Solution

The fourth proportional to 190,118.76, 285,177.78 and 77,851.32 is: 116,776.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,118.76 : 285,177.78 = 77,851.32 : x
  2. Step 2: Convert to fraction form
    190,118.76/285,177.78 = 77,851.32/x
  3. Step 3: Cross multiply
    190,118.76x = 285,177.78 × 77,851.32
  4. Step 4: Simplify right side
    190,118.76x = 22,201,466,607.67
  5. Step 5: Solve for x
    x = 22,201,466,607.67/190,118.76
  6. Step 6: Final answer
    x = 116,776.83

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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.