Home / 145,709.44-201,073.62-81,177.16

Finding the Fourth Proportional to 145,709.44, 201,073.62 and 81,177.16

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Solution

The fourth proportional to 145,709.44, 201,073.62 and 81,177.16 is: 112,021.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,709.44 : 201,073.62 = 81,177.16 : x
  2. Step 2: Convert to fraction form
    145,709.44/201,073.62 = 81,177.16/x
  3. Step 3: Cross multiply
    145,709.44x = 201,073.62 × 81,177.16
  4. Step 4: Simplify right side
    145,709.44x = 16,322,585,422.52
  5. Step 5: Solve for x
    x = 16,322,585,422.52/145,709.44
  6. Step 6: Final answer
    x = 112,021.47

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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.