Home / 127,078.08-190,242.63-111,313.95

Finding the Fourth Proportional to 127,078.08, 190,242.63 and 111,313.95

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Solution

The fourth proportional to 127,078.08, 190,242.63 and 111,313.95 is: 166,642.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,078.08 : 190,242.63 = 111,313.95 : x
  2. Step 2: Convert to fraction form
    127,078.08/190,242.63 = 111,313.95/x
  3. Step 3: Cross multiply
    127,078.08x = 190,242.63 × 111,313.95
  4. Step 4: Simplify right side
    127,078.08x = 21,176,658,603.69
  5. Step 5: Solve for x
    x = 21,176,658,603.69/127,078.08
  6. Step 6: Final answer
    x = 166,642.89

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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.