Home / 145,745.09-201,178.56-85,335.14

Finding the Fourth Proportional to 145,745.09, 201,178.56 and 85,335.14

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Solution

The fourth proportional to 145,745.09, 201,178.56 and 85,335.14 is: 117,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,745.09 : 201,178.56 = 85,335.14 : x
  2. Step 2: Convert to fraction form
    145,745.09/201,178.56 = 85,335.14/x
  3. Step 3: Cross multiply
    145,745.09x = 201,178.56 × 85,335.14
  4. Step 4: Simplify right side
    145,745.09x = 17,167,600,582.60
  5. Step 5: Solve for x
    x = 17,167,600,582.60/145,745.09
  6. Step 6: Final answer
    x = 117,791.97

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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.