Home / 81,198.62-121,783.56-22,038.90

Finding the Fourth Proportional to 81,198.62, 121,783.56 and 22,038.90

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Solution

The fourth proportional to 81,198.62, 121,783.56 and 22,038.90 is: 33,054.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,198.62 : 121,783.56 = 22,038.90 : x
  2. Step 2: Convert to fraction form
    81,198.62/121,783.56 = 22,038.90/x
  3. Step 3: Cross multiply
    81,198.62x = 121,783.56 × 22,038.90
  4. Step 4: Simplify right side
    81,198.62x = 2,683,975,700.48
  5. Step 5: Solve for x
    x = 2,683,975,700.48/81,198.62
  6. Step 6: Final answer
    x = 33,054.45

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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.