Home / 116,376.84-160,661.16-78,336.60

Finding the Fourth Proportional to 116,376.84, 160,661.16 and 78,336.60

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Solution

The fourth proportional to 116,376.84, 160,661.16 and 78,336.60 is: 108,145.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,376.84 : 160,661.16 = 78,336.60 : x
  2. Step 2: Convert to fraction form
    116,376.84/160,661.16 = 78,336.60/x
  3. Step 3: Cross multiply
    116,376.84x = 160,661.16 × 78,336.60
  4. Step 4: Simplify right side
    116,376.84x = 12,585,649,026.46
  5. Step 5: Solve for x
    x = 12,585,649,026.46/116,376.84
  6. Step 6: Final answer
    x = 108,145.65

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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.