Home / 134,085.12-201,201.54-81,531.51

Finding the Fourth Proportional to 134,085.12, 201,201.54 and 81,531.51

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Solution

The fourth proportional to 134,085.12, 201,201.54 and 81,531.51 is: 122,342.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,085.12 : 201,201.54 = 81,531.51 : x
  2. Step 2: Convert to fraction form
    134,085.12/201,201.54 = 81,531.51/x
  3. Step 3: Cross multiply
    134,085.12x = 201,201.54 × 81,531.51
  4. Step 4: Simplify right side
    134,085.12x = 16,404,265,370.53
  5. Step 5: Solve for x
    x = 16,404,265,370.53/134,085.12
  6. Step 6: Final answer
    x = 122,342.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.