Home / 140,403.20-210,604.80-87,974.40

Finding the Fourth Proportional to 140,403.20, 210,604.80 and 87,974.40

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Solution

The fourth proportional to 140,403.20, 210,604.80 and 87,974.40 is: 131,961.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,403.20 : 210,604.80 = 87,974.40 : x
  2. Step 2: Convert to fraction form
    140,403.20/210,604.80 = 87,974.40/x
  3. Step 3: Cross multiply
    140,403.20x = 210,604.80 × 87,974.40
  4. Step 4: Simplify right side
    140,403.20x = 18,527,830,917.12
  5. Step 5: Solve for x
    x = 18,527,830,917.12/140,403.20
  6. Step 6: Final answer
    x = 131,961.60

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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.