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Finding the Fourth Proportional to 134,526, 201,290.78 and 84,205.20

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Solution

The fourth proportional to 134,526, 201,290.78 and 84,205.20 is: 125,995.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,526 : 201,290.78 = 84,205.20 : x
  2. Step 2: Convert to fraction form
    134,526/201,290.78 = 84,205.20/x
  3. Step 3: Cross multiply
    134,526x = 201,290.78 × 84,205.20
  4. Step 4: Simplify right side
    134,526x = 16,949,730,388.06
  5. Step 5: Solve for x
    x = 16,949,730,388.06/134,526
  6. Step 6: Final answer
    x = 125,995.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.