Home / 145,979.40-218,531.70-86,784.60

Finding the Fourth Proportional to 145,979.40, 218,531.70 and 86,784.60

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Solution

The fourth proportional to 145,979.40, 218,531.70 and 86,784.60 is: 129,916.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,979.40 : 218,531.70 = 86,784.60 : x
  2. Step 2: Convert to fraction form
    145,979.40/218,531.70 = 86,784.60/x
  3. Step 3: Cross multiply
    145,979.40x = 218,531.70 × 86,784.60
  4. Step 4: Simplify right side
    145,979.40x = 18,965,186,171.82
  5. Step 5: Solve for x
    x = 18,965,186,171.82/145,979.40
  6. Step 6: Final answer
    x = 129,916.87

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