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Finding the Fourth Proportional to 191,983.20, 287,607.60 and 103,207.20

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Solution

The fourth proportional to 191,983.20, 287,607.60 and 103,207.20 is: 154,613.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,983.20 : 287,607.60 = 103,207.20 : x
  2. Step 2: Convert to fraction form
    191,983.20/287,607.60 = 103,207.20/x
  3. Step 3: Cross multiply
    191,983.20x = 287,607.60 × 103,207.20
  4. Step 4: Simplify right side
    191,983.20x = 29,683,175,094.72
  5. Step 5: Solve for x
    x = 29,683,175,094.72/191,983.20
  6. Step 6: Final answer
    x = 154,613.40

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