Home / 135,114.32-186,438.70-76,972.58

Finding the Fourth Proportional to 135,114.32, 186,438.70 and 76,972.58

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Solution

The fourth proportional to 135,114.32, 186,438.70 and 76,972.58 is: 106,211.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,114.32 : 186,438.70 = 76,972.58 : x
  2. Step 2: Convert to fraction form
    135,114.32/186,438.70 = 76,972.58/x
  3. Step 3: Cross multiply
    135,114.32x = 186,438.70 × 76,972.58
  4. Step 4: Simplify right side
    135,114.32x = 14,350,667,750.85
  5. Step 5: Solve for x
    x = 14,350,667,750.85/135,114.32
  6. Step 6: Final answer
    x = 106,211.30

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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.