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Finding the Fourth Proportional to 106,576.60, 146,985.42 and 64,127.20

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Solution

The fourth proportional to 106,576.60, 146,985.42 and 64,127.20 is: 88,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,576.60 : 146,985.42 = 64,127.20 : x
  2. Step 2: Convert to fraction form
    106,576.60/146,985.42 = 64,127.20/x
  3. Step 3: Cross multiply
    106,576.60x = 146,985.42 × 64,127.20
  4. Step 4: Simplify right side
    106,576.60x = 9,425,763,425.42
  5. Step 5: Solve for x
    x = 9,425,763,425.42/106,576.60
  6. Step 6: Final answer
    x = 88,441.21

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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.