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Finding the Fourth Proportional to 170,770.40, 256,155.60 and 77,458.40

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Solution

The fourth proportional to 170,770.40, 256,155.60 and 77,458.40 is: 116,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,770.40 : 256,155.60 = 77,458.40 : x
  2. Step 2: Convert to fraction form
    170,770.40/256,155.60 = 77,458.40/x
  3. Step 3: Cross multiply
    170,770.40x = 256,155.60 × 77,458.40
  4. Step 4: Simplify right side
    170,770.40x = 19,841,402,927.04
  5. Step 5: Solve for x
    x = 19,841,402,927.04/170,770.40
  6. Step 6: Final answer
    x = 116,187.60

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