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Finding the Fourth Proportional to 115,541.20, 162,107.60 and 115,541.20

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Solution

The fourth proportional to 115,541.20, 162,107.60 and 115,541.20 is: 162,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,541.20 : 162,107.60 = 115,541.20 : x
  2. Step 2: Convert to fraction form
    115,541.20/162,107.60 = 115,541.20/x
  3. Step 3: Cross multiply
    115,541.20x = 162,107.60 × 115,541.20
  4. Step 4: Simplify right side
    115,541.20x = 18,730,106,633.12
  5. Step 5: Solve for x
    x = 18,730,106,633.12/115,541.20
  6. Step 6: Final answer
    x = 162,107.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.