Home / 143,864.51-198,533.88-83,471.12

Finding the Fourth Proportional to 143,864.51, 198,533.88 and 83,471.12

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Solution

The fourth proportional to 143,864.51, 198,533.88 and 83,471.12 is: 115,190.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,864.51 : 198,533.88 = 83,471.12 : x
  2. Step 2: Convert to fraction form
    143,864.51/198,533.88 = 83,471.12/x
  3. Step 3: Cross multiply
    143,864.51x = 198,533.88 × 83,471.12
  4. Step 4: Simplify right side
    143,864.51x = 16,571,845,321.55
  5. Step 5: Solve for x
    x = 16,571,845,321.55/143,864.51
  6. Step 6: Final answer
    x = 115,190.64

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1.5x scale

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.