Home / 280,660.34-421,056.63-91,106.07

Finding the Fourth Proportional to 280,660.34, 421,056.63 and 91,106.07

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Solution

The fourth proportional to 280,660.34, 421,056.63 and 91,106.07 is: 136,680.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,660.34 : 421,056.63 = 91,106.07 : x
  2. Step 2: Convert to fraction form
    280,660.34/421,056.63 = 91,106.07/x
  3. Step 3: Cross multiply
    280,660.34x = 421,056.63 × 91,106.07
  4. Step 4: Simplify right side
    280,660.34x = 38,360,813,227.78
  5. Step 5: Solve for x
    x = 38,360,813,227.78/280,660.34
  6. Step 6: Final answer
    x = 136,680.56

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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.