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Finding the Fourth Proportional to 128,527.61, 192,456.07 and 103,430.57

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Solution

The fourth proportional to 128,527.61, 192,456.07 and 103,430.57 is: 154,875.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,527.61 : 192,456.07 = 103,430.57 : x
  2. Step 2: Convert to fraction form
    128,527.61/192,456.07 = 103,430.57/x
  3. Step 3: Cross multiply
    128,527.61x = 192,456.07 × 103,430.57
  4. Step 4: Simplify right side
    128,527.61x = 19,905,839,799.20
  5. Step 5: Solve for x
    x = 19,905,839,799.20/128,527.61
  6. Step 6: Final answer
    x = 154,875.99

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