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Finding the Fourth Proportional to 116,617.60, 160,768 and 98,639.92

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Solution

The fourth proportional to 116,617.60, 160,768 and 98,639.92 is: 135,984.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,617.60 : 160,768 = 98,639.92 : x
  2. Step 2: Convert to fraction form
    116,617.60/160,768 = 98,639.92/x
  3. Step 3: Cross multiply
    116,617.60x = 160,768 × 98,639.92
  4. Step 4: Simplify right side
    116,617.60x = 15,858,142,658.56
  5. Step 5: Solve for x
    x = 15,858,142,658.56/116,617.60
  6. Step 6: Final answer
    x = 135,984.13

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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.