Home / 123,750.10-185,698.05-81,751.60

Finding the Fourth Proportional to 123,750.10, 185,698.05 and 81,751.60

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Solution

The fourth proportional to 123,750.10, 185,698.05 and 81,751.60 is: 122,675.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,750.10 : 185,698.05 = 81,751.60 : x
  2. Step 2: Convert to fraction form
    123,750.10/185,698.05 = 81,751.60/x
  3. Step 3: Cross multiply
    123,750.10x = 185,698.05 × 81,751.60
  4. Step 4: Simplify right side
    123,750.10x = 15,181,112,704.38
  5. Step 5: Solve for x
    x = 15,181,112,704.38/123,750.10
  6. Step 6: Final answer
    x = 122,675.56

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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.