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Finding the Fourth Proportional to 135,788.93, 187,388.47 and 75,360.30

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Solution

The fourth proportional to 135,788.93, 187,388.47 and 75,360.30 is: 103,997.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,788.93 : 187,388.47 = 75,360.30 : x
  2. Step 2: Convert to fraction form
    135,788.93/187,388.47 = 75,360.30/x
  3. Step 3: Cross multiply
    135,788.93x = 187,388.47 × 75,360.30
  4. Step 4: Simplify right side
    135,788.93x = 14,121,651,315.74
  5. Step 5: Solve for x
    x = 14,121,651,315.74/135,788.93
  6. Step 6: Final answer
    x = 103,997.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.