Home / 158,232.85-218,361.56-86,617.40

Finding the Fourth Proportional to 158,232.85, 218,361.56 and 86,617.40

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Solution

The fourth proportional to 158,232.85, 218,361.56 and 86,617.40 is: 119,532.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,232.85 : 218,361.56 = 86,617.40 : x
  2. Step 2: Convert to fraction form
    158,232.85/218,361.56 = 86,617.40/x
  3. Step 3: Cross multiply
    158,232.85x = 218,361.56 × 86,617.40
  4. Step 4: Simplify right side
    158,232.85x = 18,913,909,062.25
  5. Step 5: Solve for x
    x = 18,913,909,062.25/158,232.85
  6. Step 6: Final answer
    x = 119,532.13

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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.