Home / 72,146.12-108,216.11-70,456.67

Finding the Fourth Proportional to 72,146.12, 108,216.11 and 70,456.67

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Solution

The fourth proportional to 72,146.12, 108,216.11 and 70,456.67 is: 105,681.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,146.12 : 108,216.11 = 70,456.67 : x
  2. Step 2: Convert to fraction form
    72,146.12/108,216.11 = 70,456.67/x
  3. Step 3: Cross multiply
    72,146.12x = 108,216.11 × 70,456.67
  4. Step 4: Simplify right side
    72,146.12x = 7,624,546,216.78
  5. Step 5: Solve for x
    x = 7,624,546,216.78/72,146.12
  6. Step 6: Final answer
    x = 105,681.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.