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Finding the Fourth Proportional to 146,051.80, 218,021.17 and 128,337.10

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Solution

The fourth proportional to 146,051.80, 218,021.17 and 128,337.10 is: 191,577.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,051.80 : 218,021.17 = 128,337.10 : x
  2. Step 2: Convert to fraction form
    146,051.80/218,021.17 = 128,337.10/x
  3. Step 3: Cross multiply
    146,051.80x = 218,021.17 × 128,337.10
  4. Step 4: Simplify right side
    146,051.80x = 27,980,204,696.41
  5. Step 5: Solve for x
    x = 27,980,204,696.41/146,051.80
  6. Step 6: Final answer
    x = 191,577.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.