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Finding the Fourth Proportional to 123,070.40, 184,605.60 and 78,747.20

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Solution

The fourth proportional to 123,070.40, 184,605.60 and 78,747.20 is: 118,120.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,070.40 : 184,605.60 = 78,747.20 : x
  2. Step 2: Convert to fraction form
    123,070.40/184,605.60 = 78,747.20/x
  3. Step 3: Cross multiply
    123,070.40x = 184,605.60 × 78,747.20
  4. Step 4: Simplify right side
    123,070.40x = 14,537,174,104.32
  5. Step 5: Solve for x
    x = 14,537,174,104.32/123,070.40
  6. Step 6: Final answer
    x = 118,120.80

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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.