Home / 145,977.11-201,448.56-85,535.72

Finding the Fourth Proportional to 145,977.11, 201,448.56 and 85,535.72

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Solution

The fourth proportional to 145,977.11, 201,448.56 and 85,535.72 is: 118,039.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,977.11 : 201,448.56 = 85,535.72 : x
  2. Step 2: Convert to fraction form
    145,977.11/201,448.56 = 85,535.72/x
  3. Step 3: Cross multiply
    145,977.11x = 201,448.56 × 85,535.72
  4. Step 4: Simplify right side
    145,977.11x = 17,231,046,615.32
  5. Step 5: Solve for x
    x = 17,231,046,615.32/145,977.11
  6. Step 6: Final answer
    x = 118,039.38

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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.