Home / 130,786.84-180,569.82-80,515

Finding the Fourth Proportional to 130,786.84, 180,569.82 and 80,515

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Solution

The fourth proportional to 130,786.84, 180,569.82 and 80,515 is: 111,162.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,786.84 : 180,569.82 = 80,515 : x
  2. Step 2: Convert to fraction form
    130,786.84/180,569.82 = 80,515/x
  3. Step 3: Cross multiply
    130,786.84x = 180,569.82 × 80,515
  4. Step 4: Simplify right side
    130,786.84x = 14,538,579,057.30
  5. Step 5: Solve for x
    x = 14,538,579,057.30/130,786.84
  6. Step 6: Final answer
    x = 111,162.40

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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.