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Finding the Fourth Proportional to 103,887.50, 143,364.80 and 56,140.76

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Solution

The fourth proportional to 103,887.50, 143,364.80 and 56,140.76 is: 77,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,887.50 : 143,364.80 = 56,140.76 : x
  2. Step 2: Convert to fraction form
    103,887.50/143,364.80 = 56,140.76/x
  3. Step 3: Cross multiply
    103,887.50x = 143,364.80 × 56,140.76
  4. Step 4: Simplify right side
    103,887.50x = 8,048,609,328.01
  5. Step 5: Solve for x
    x = 8,048,609,328.01/103,887.50
  6. Step 6: Final answer
    x = 77,474.28

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