Home / 123,058.40-184,587.60-78,735.20

Finding the Fourth Proportional to 123,058.40, 184,587.60 and 78,735.20

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Solution

The fourth proportional to 123,058.40, 184,587.60 and 78,735.20 is: 118,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,058.40 : 184,587.60 = 78,735.20 : x
  2. Step 2: Convert to fraction form
    123,058.40/184,587.60 = 78,735.20/x
  3. Step 3: Cross multiply
    123,058.40x = 184,587.60 × 78,735.20
  4. Step 4: Simplify right side
    123,058.40x = 14,533,541,603.52
  5. Step 5: Solve for x
    x = 14,533,541,603.52/123,058.40
  6. Step 6: Final answer
    x = 118,102.80

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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.