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Finding the Fourth Proportional to 146,128, 201,656.64 and 79,060

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Solution

The fourth proportional to 146,128, 201,656.64 and 79,060 is: 109,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,128 : 201,656.64 = 79,060 : x
  2. Step 2: Convert to fraction form
    146,128/201,656.64 = 79,060/x
  3. Step 3: Cross multiply
    146,128x = 201,656.64 × 79,060
  4. Step 4: Simplify right side
    146,128x = 15,942,973,958.40
  5. Step 5: Solve for x
    x = 15,942,973,958.40/146,128
  6. Step 6: Final answer
    x = 109,102.80

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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.