Home / 100,888.25-139,226.67-55,567.79

Finding the Fourth Proportional to 100,888.25, 139,226.67 and 55,567.79

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Solution

The fourth proportional to 100,888.25, 139,226.67 and 55,567.79 is: 76,684.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,888.25 : 139,226.67 = 55,567.79 : x
  2. Step 2: Convert to fraction form
    100,888.25/139,226.67 = 55,567.79/x
  3. Step 3: Cross multiply
    100,888.25x = 139,226.67 × 55,567.79
  4. Step 4: Simplify right side
    100,888.25x = 7,736,517,386.99
  5. Step 5: Solve for x
    x = 7,736,517,386.99/100,888.25
  6. Step 6: Final answer
    x = 76,684.03

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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.