Home / 205,532.10-308,816.55-130,688.10

Finding the Fourth Proportional to 205,532.10, 308,816.55 and 130,688.10

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Solution

The fourth proportional to 205,532.10, 308,816.55 and 130,688.10 is: 196,361.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,532.10 : 308,816.55 = 130,688.10 : x
  2. Step 2: Convert to fraction form
    205,532.10/308,816.55 = 130,688.10/x
  3. Step 3: Cross multiply
    205,532.10x = 308,816.55 × 130,688.10
  4. Step 4: Simplify right side
    205,532.10x = 40,358,648,168.06
  5. Step 5: Solve for x
    x = 40,358,648,168.06/205,532.10
  6. Step 6: Final answer
    x = 196,361.78

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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.