Home / 76,538.06-105,703.24-68,189.20

Finding the Fourth Proportional to 76,538.06, 105,703.24 and 68,189.20

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Solution

The fourth proportional to 76,538.06, 105,703.24 and 68,189.20 is: 94,173.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,538.06 : 105,703.24 = 68,189.20 : x
  2. Step 2: Convert to fraction form
    76,538.06/105,703.24 = 68,189.20/x
  3. Step 3: Cross multiply
    76,538.06x = 105,703.24 × 68,189.20
  4. Step 4: Simplify right side
    76,538.06x = 7,207,819,373.01
  5. Step 5: Solve for x
    x = 7,207,819,373.01/76,538.06
  6. Step 6: Final answer
    x = 94,173.01

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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.