Home / 152,399.12-210,292.81-87,867.64

Finding the Fourth Proportional to 152,399.12, 210,292.81 and 87,867.64

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Solution

The fourth proportional to 152,399.12, 210,292.81 and 87,867.64 is: 121,246.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,399.12 : 210,292.81 = 87,867.64 : x
  2. Step 2: Convert to fraction form
    152,399.12/210,292.81 = 87,867.64/x
  3. Step 3: Cross multiply
    152,399.12x = 210,292.81 × 87,867.64
  4. Step 4: Simplify right side
    152,399.12x = 18,477,932,923.67
  5. Step 5: Solve for x
    x = 18,477,932,923.67/152,399.12
  6. Step 6: Final answer
    x = 121,246.98

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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.