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Finding the Fourth Proportional to 99,708.61, 137,598.31 and 54,387.56

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Solution

The fourth proportional to 99,708.61, 137,598.31 and 54,387.56 is: 75,055.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,708.61 : 137,598.31 = 54,387.56 : x
  2. Step 2: Convert to fraction form
    99,708.61/137,598.31 = 54,387.56/x
  3. Step 3: Cross multiply
    99,708.61x = 137,598.31 × 54,387.56
  4. Step 4: Simplify right side
    99,708.61x = 7,483,636,341.02
  5. Step 5: Solve for x
    x = 7,483,636,341.02/99,708.61
  6. Step 6: Final answer
    x = 75,055.07

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