Home / 123,189.06-184,936.68-85,985.76

Finding the Fourth Proportional to 123,189.06, 184,936.68 and 85,985.76

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Solution

The fourth proportional to 123,189.06, 184,936.68 and 85,985.76 is: 129,085.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,189.06 : 184,936.68 = 85,985.76 : x
  2. Step 2: Convert to fraction form
    123,189.06/184,936.68 = 85,985.76/x
  3. Step 3: Cross multiply
    123,189.06x = 184,936.68 × 85,985.76
  4. Step 4: Simplify right side
    123,189.06x = 15,901,920,981.68
  5. Step 5: Solve for x
    x = 15,901,920,981.68/123,189.06
  6. Step 6: Final answer
    x = 129,085.50

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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.