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Finding the Fourth Proportional to 116,653.60, 160,985.01 and 65,668.20

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Solution

The fourth proportional to 116,653.60, 160,985.01 and 65,668.20 is: 90,623.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,653.60 : 160,985.01 = 65,668.20 : x
  2. Step 2: Convert to fraction form
    116,653.60/160,985.01 = 65,668.20/x
  3. Step 3: Cross multiply
    116,653.60x = 160,985.01 × 65,668.20
  4. Step 4: Simplify right side
    116,653.60x = 10,571,595,833.68
  5. Step 5: Solve for x
    x = 10,571,595,833.68/116,653.60
  6. Step 6: Final answer
    x = 90,623.83

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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.