Home / 123,255.10-184,554.60-78,640.30

Finding the Fourth Proportional to 123,255.10, 184,554.60 and 78,640.30

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Solution

The fourth proportional to 123,255.10, 184,554.60 and 78,640.30 is: 117,751.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,255.10 : 184,554.60 = 78,640.30 : x
  2. Step 2: Convert to fraction form
    123,255.10/184,554.60 = 78,640.30/x
  3. Step 3: Cross multiply
    123,255.10x = 184,554.60 × 78,640.30
  4. Step 4: Simplify right side
    123,255.10x = 14,513,429,110.38
  5. Step 5: Solve for x
    x = 14,513,429,110.38/123,255.10
  6. Step 6: Final answer
    x = 117,751.14

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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.