Home / 97,974.40-146,742.90-80,478.40

Finding the Fourth Proportional to 97,974.40, 146,742.90 and 80,478.40

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Solution

The fourth proportional to 97,974.40, 146,742.90 and 80,478.40 is: 120,537.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,974.40 : 146,742.90 = 80,478.40 : x
  2. Step 2: Convert to fraction form
    97,974.40/146,742.90 = 80,478.40/x
  3. Step 3: Cross multiply
    97,974.40x = 146,742.90 × 80,478.40
  4. Step 4: Simplify right side
    97,974.40x = 11,809,633,803.36
  5. Step 5: Solve for x
    x = 11,809,633,803.36/97,974.40
  6. Step 6: Final answer
    x = 120,537.95

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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.