Home / 146,047.80-218,015.21-128,333.10

Finding the Fourth Proportional to 146,047.80, 218,015.21 and 128,333.10

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Solution

The fourth proportional to 146,047.80, 218,015.21 and 128,333.10 is: 191,571.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,047.80 : 218,015.21 = 128,333.10 : x
  2. Step 2: Convert to fraction form
    146,047.80/218,015.21 = 128,333.10/x
  3. Step 3: Cross multiply
    146,047.80x = 218,015.21 × 128,333.10
  4. Step 4: Simplify right side
    146,047.80x = 27,978,567,746.45
  5. Step 5: Solve for x
    x = 27,978,567,746.45/146,047.80
  6. Step 6: Final answer
    x = 191,571.31

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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.