Home / 158,534.55-218,791.46-86,928.53

Finding the Fourth Proportional to 158,534.55, 218,791.46 and 86,928.53

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Solution

The fourth proportional to 158,534.55, 218,791.46 and 86,928.53 is: 119,968.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,534.55 : 218,791.46 = 86,928.53 : x
  2. Step 2: Convert to fraction form
    158,534.55/218,791.46 = 86,928.53/x
  3. Step 3: Cross multiply
    158,534.55x = 218,791.46 × 86,928.53
  4. Step 4: Simplify right side
    158,534.55x = 19,019,219,117.72
  5. Step 5: Solve for x
    x = 19,019,219,117.72/158,534.55
  6. Step 6: Final answer
    x = 119,968.92

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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.