Home / 141,781.34-195,656.74-81,361.51

Finding the Fourth Proportional to 141,781.34, 195,656.74 and 81,361.51

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Solution

The fourth proportional to 141,781.34, 195,656.74 and 81,361.51 is: 112,278.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,781.34 : 195,656.74 = 81,361.51 : x
  2. Step 2: Convert to fraction form
    141,781.34/195,656.74 = 81,361.51/x
  3. Step 3: Cross multiply
    141,781.34x = 195,656.74 × 81,361.51
  4. Step 4: Simplify right side
    141,781.34x = 15,918,927,115.53
  5. Step 5: Solve for x
    x = 15,918,927,115.53/141,781.34
  6. Step 6: Final answer
    x = 112,278.01

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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.