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Finding the Fourth Proportional to 106,479.36, 146,865.60 and 74,655.36

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Solution

The fourth proportional to 106,479.36, 146,865.60 and 74,655.36 is: 102,971.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,479.36 : 146,865.60 = 74,655.36 : x
  2. Step 2: Convert to fraction form
    106,479.36/146,865.60 = 74,655.36/x
  3. Step 3: Cross multiply
    106,479.36x = 146,865.60 × 74,655.36
  4. Step 4: Simplify right side
    106,479.36x = 10,964,304,239.62
  5. Step 5: Solve for x
    x = 10,964,304,239.62/106,479.36
  6. Step 6: Final answer
    x = 102,971.17

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1.5x scale

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.