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Finding the Fourth Proportional to 155,448, 214,518.24 and 84,792

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Solution

The fourth proportional to 155,448, 214,518.24 and 84,792 is: 117,012.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,448 : 214,518.24 = 84,792 : x
  2. Step 2: Convert to fraction form
    155,448/214,518.24 = 84,792/x
  3. Step 3: Cross multiply
    155,448x = 214,518.24 × 84,792
  4. Step 4: Simplify right side
    155,448x = 18,189,430,606.08
  5. Step 5: Solve for x
    x = 18,189,430,606.08/155,448
  6. Step 6: Final answer
    x = 117,012.96

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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.