Home / 78,168.06-116,686.09-68,709.69

Finding the Fourth Proportional to 78,168.06, 116,686.09 and 68,709.69

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Solution

The fourth proportional to 78,168.06, 116,686.09 and 68,709.69 is: 102,567.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,168.06 : 116,686.09 = 68,709.69 : x
  2. Step 2: Convert to fraction form
    78,168.06/116,686.09 = 68,709.69/x
  3. Step 3: Cross multiply
    78,168.06x = 116,686.09 × 68,709.69
  4. Step 4: Simplify right side
    78,168.06x = 8,017,464,899.44
  5. Step 5: Solve for x
    x = 8,017,464,899.44/78,168.06
  6. Step 6: Final answer
    x = 102,567.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.