Home / 145,785.12-201,182.59-82,143.42

Finding the Fourth Proportional to 145,785.12, 201,182.59 and 82,143.42

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Solution

The fourth proportional to 145,785.12, 201,182.59 and 82,143.42 is: 113,357.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,785.12 : 201,182.59 = 82,143.42 : x
  2. Step 2: Convert to fraction form
    145,785.12/201,182.59 = 82,143.42/x
  3. Step 3: Cross multiply
    145,785.12x = 201,182.59 × 82,143.42
  4. Step 4: Simplify right side
    145,785.12x = 16,525,824,873.25
  5. Step 5: Solve for x
    x = 16,525,824,873.25/145,785.12
  6. Step 6: Final answer
    x = 113,357.42

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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.