Home / 140,143.80-210,215.70-129,318.15

Finding the Fourth Proportional to 140,143.80, 210,215.70 and 129,318.15

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Solution

The fourth proportional to 140,143.80, 210,215.70 and 129,318.15 is: 193,977.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,143.80 : 210,215.70 = 129,318.15 : x
  2. Step 2: Convert to fraction form
    140,143.80/210,215.70 = 129,318.15/x
  3. Step 3: Cross multiply
    140,143.80x = 210,215.70 × 129,318.15
  4. Step 4: Simplify right side
    140,143.80x = 27,184,705,424.96
  5. Step 5: Solve for x
    x = 27,184,705,424.96/140,143.80
  6. Step 6: Final answer
    x = 193,977.23

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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.