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Finding the Fourth Proportional to 116,021.44, 160,109.60 and 65,720.40

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Solution

The fourth proportional to 116,021.44, 160,109.60 and 65,720.40 is: 90,694.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,021.44 : 160,109.60 = 65,720.40 : x
  2. Step 2: Convert to fraction form
    116,021.44/160,109.60 = 65,720.40/x
  3. Step 3: Cross multiply
    116,021.44x = 160,109.60 × 65,720.40
  4. Step 4: Simplify right side
    116,021.44x = 10,522,466,955.84
  5. Step 5: Solve for x
    x = 10,522,466,955.84/116,021.44
  6. Step 6: Final answer
    x = 90,694.16

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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.