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Finding the Fourth Proportional to 116,639.75, 160,977.03 and 65,671.58

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Solution

The fourth proportional to 116,639.75, 160,977.03 and 65,671.58 is: 90,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,639.75 : 160,977.03 = 65,671.58 : x
  2. Step 2: Convert to fraction form
    116,639.75/160,977.03 = 65,671.58/x
  3. Step 3: Cross multiply
    116,639.75x = 160,977.03 × 65,671.58
  4. Step 4: Simplify right side
    116,639.75x = 10,571,615,903.81
  5. Step 5: Solve for x
    x = 10,571,615,903.81/116,639.75
  6. Step 6: Final answer
    x = 90,634.76

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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.