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Finding the Fourth Proportional to 145,654.93, 201,007.61 and 81,995.05

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Solution

The fourth proportional to 145,654.93, 201,007.61 and 81,995.05 is: 113,155.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,654.93 : 201,007.61 = 81,995.05 : x
  2. Step 2: Convert to fraction form
    145,654.93/201,007.61 = 81,995.05/x
  3. Step 3: Cross multiply
    145,654.93x = 201,007.61 × 81,995.05
  4. Step 4: Simplify right side
    145,654.93x = 16,481,628,622.36
  5. Step 5: Solve for x
    x = 16,481,628,622.36/145,654.93
  6. Step 6: Final answer
    x = 113,155.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.