Home / 145,850.32-201,272.25-81,318.79

Finding the Fourth Proportional to 145,850.32, 201,272.25 and 81,318.79

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Solution

The fourth proportional to 145,850.32, 201,272.25 and 81,318.79 is: 112,219.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,850.32 : 201,272.25 = 81,318.79 : x
  2. Step 2: Convert to fraction form
    145,850.32/201,272.25 = 81,318.79/x
  3. Step 3: Cross multiply
    145,850.32x = 201,272.25 × 81,318.79
  4. Step 4: Simplify right side
    145,850.32x = 16,367,215,830.58
  5. Step 5: Solve for x
    x = 16,367,215,830.58/145,850.32
  6. Step 6: Final answer
    x = 112,219.27

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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.