Home / 143,896.56-214,746-128,150.16

Finding the Fourth Proportional to 143,896.56, 214,746 and 128,150.16

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Solution

The fourth proportional to 143,896.56, 214,746 and 128,150.16 is: 191,246.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,896.56 : 214,746 = 128,150.16 : x
  2. Step 2: Convert to fraction form
    143,896.56/214,746 = 128,150.16/x
  3. Step 3: Cross multiply
    143,896.56x = 214,746 × 128,150.16
  4. Step 4: Simplify right side
    143,896.56x = 27,519,734,259.36
  5. Step 5: Solve for x
    x = 27,519,734,259.36/143,896.56
  6. Step 6: Final answer
    x = 191,246.64

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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.