Home / 115,163.16-158,840.56-76,330.76

Finding the Fourth Proportional to 115,163.16, 158,840.56 and 76,330.76

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Solution

The fourth proportional to 115,163.16, 158,840.56 and 76,330.76 is: 105,280.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,163.16 : 158,840.56 = 76,330.76 : x
  2. Step 2: Convert to fraction form
    115,163.16/158,840.56 = 76,330.76/x
  3. Step 3: Cross multiply
    115,163.16x = 158,840.56 × 76,330.76
  4. Step 4: Simplify right side
    115,163.16x = 12,124,419,964.84
  5. Step 5: Solve for x
    x = 12,124,419,964.84/115,163.16
  6. Step 6: Final answer
    x = 105,280.37

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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.