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Finding the Fourth Proportional to 191,720.80, 287,581.20 and 51,493.60

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Solution

The fourth proportional to 191,720.80, 287,581.20 and 51,493.60 is: 77,240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,720.80 : 287,581.20 = 51,493.60 : x
  2. Step 2: Convert to fraction form
    191,720.80/287,581.20 = 51,493.60/x
  3. Step 3: Cross multiply
    191,720.80x = 287,581.20 × 51,493.60
  4. Step 4: Simplify right side
    191,720.80x = 14,808,591,280.32
  5. Step 5: Solve for x
    x = 14,808,591,280.32/191,720.80
  6. Step 6: Final answer
    x = 77,240.40

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