Home / 123,928.03-171,021.76-67,339.40

Finding the Fourth Proportional to 123,928.03, 171,021.76 and 67,339.40

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Solution

The fourth proportional to 123,928.03, 171,021.76 and 67,339.40 is: 92,928.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,928.03 : 171,021.76 = 67,339.40 : x
  2. Step 2: Convert to fraction form
    123,928.03/171,021.76 = 67,339.40/x
  3. Step 3: Cross multiply
    123,928.03x = 171,021.76 × 67,339.40
  4. Step 4: Simplify right side
    123,928.03x = 11,516,502,537.00
  5. Step 5: Solve for x
    x = 11,516,502,537.00/123,928.03
  6. Step 6: Final answer
    x = 92,928.96

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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.