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Finding the Fourth Proportional to 146,628, 202,346.64 and 79,560

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Solution

The fourth proportional to 146,628, 202,346.64 and 79,560 is: 109,792.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,628 : 202,346.64 = 79,560 : x
  2. Step 2: Convert to fraction form
    146,628/202,346.64 = 79,560/x
  3. Step 3: Cross multiply
    146,628x = 202,346.64 × 79,560
  4. Step 4: Simplify right side
    146,628x = 16,098,698,678.40
  5. Step 5: Solve for x
    x = 16,098,698,678.40/146,628
  6. Step 6: Final answer
    x = 109,792.80

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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.