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Finding the Fourth Proportional to 134,889.93, 186,119.24 and 78,270.93

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Solution

The fourth proportional to 134,889.93, 186,119.24 and 78,270.93 is: 107,997.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,889.93 : 186,119.24 = 78,270.93 : x
  2. Step 2: Convert to fraction form
    134,889.93/186,119.24 = 78,270.93/x
  3. Step 3: Cross multiply
    134,889.93x = 186,119.24 × 78,270.93
  4. Step 4: Simplify right side
    134,889.93x = 14,567,725,614.34
  5. Step 5: Solve for x
    x = 14,567,725,614.34/134,889.93
  6. Step 6: Final answer
    x = 107,997.13

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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.