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Finding the Fourth Proportional to 116,525.60, 160,800.72 and 66,221.60

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Solution

The fourth proportional to 116,525.60, 160,800.72 and 66,221.60 is: 91,383.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,525.60 : 160,800.72 = 66,221.60 : x
  2. Step 2: Convert to fraction form
    116,525.60/160,800.72 = 66,221.60/x
  3. Step 3: Cross multiply
    116,525.60x = 160,800.72 × 66,221.60
  4. Step 4: Simplify right side
    116,525.60x = 10,648,480,959.55
  5. Step 5: Solve for x
    x = 10,648,480,959.55/116,525.60
  6. Step 6: Final answer
    x = 91,383.19

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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.