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Finding the Fourth Proportional to 151,388.48, 208,916.16 and 87,763.16

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Solution

The fourth proportional to 151,388.48, 208,916.16 and 87,763.16 is: 121,113.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,388.48 : 208,916.16 = 87,763.16 : x
  2. Step 2: Convert to fraction form
    151,388.48/208,916.16 = 87,763.16/x
  3. Step 3: Cross multiply
    151,388.48x = 208,916.16 × 87,763.16
  4. Step 4: Simplify right side
    151,388.48x = 18,335,142,376.67
  5. Step 5: Solve for x
    x = 18,335,142,376.67/151,388.48
  6. Step 6: Final answer
    x = 121,113.19

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