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Finding the Fourth Proportional to 145,759.48, 218,664.20 and 66,880.48

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Solution

The fourth proportional to 145,759.48, 218,664.20 and 66,880.48 is: 100,332.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,759.48 : 218,664.20 = 66,880.48 : x
  2. Step 2: Convert to fraction form
    145,759.48/218,664.20 = 66,880.48/x
  3. Step 3: Cross multiply
    145,759.48x = 218,664.20 × 66,880.48
  4. Step 4: Simplify right side
    145,759.48x = 14,624,366,654.82
  5. Step 5: Solve for x
    x = 14,624,366,654.82/145,759.48
  6. Step 6: Final answer
    x = 100,332.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.