Home / 101,090.55-139,504.56-55,771.35

Finding the Fourth Proportional to 101,090.55, 139,504.56 and 55,771.35

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Solution

The fourth proportional to 101,090.55, 139,504.56 and 55,771.35 is: 76,964.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,090.55 : 139,504.56 = 55,771.35 : x
  2. Step 2: Convert to fraction form
    101,090.55/139,504.56 = 55,771.35/x
  3. Step 3: Cross multiply
    101,090.55x = 139,504.56 × 55,771.35
  4. Step 4: Simplify right side
    101,090.55x = 7,780,357,642.36
  5. Step 5: Solve for x
    x = 7,780,357,642.36/101,090.55
  6. Step 6: Final answer
    x = 76,964.25

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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.