Home / 152,249.43-210,086.69-87,728.07

Finding the Fourth Proportional to 152,249.43, 210,086.69 and 87,728.07

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Solution

The fourth proportional to 152,249.43, 210,086.69 and 87,728.07 is: 121,054.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,249.43 : 210,086.69 = 87,728.07 : x
  2. Step 2: Convert to fraction form
    152,249.43/210,086.69 = 87,728.07/x
  3. Step 3: Cross multiply
    152,249.43x = 210,086.69 × 87,728.07
  4. Step 4: Simplify right side
    152,249.43x = 18,430,499,407.75
  5. Step 5: Solve for x
    x = 18,430,499,407.75/152,249.43
  6. Step 6: Final answer
    x = 121,054.64

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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.