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Finding the Fourth Proportional to 104,485.80, 144,190.92 and 56,739.13

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Solution

The fourth proportional to 104,485.80, 144,190.92 and 56,739.13 is: 78,300.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,485.80 : 144,190.92 = 56,739.13 : x
  2. Step 2: Convert to fraction form
    104,485.80/144,190.92 = 56,739.13/x
  3. Step 3: Cross multiply
    104,485.80x = 144,190.92 × 56,739.13
  4. Step 4: Simplify right side
    104,485.80x = 8,181,267,354.70
  5. Step 5: Solve for x
    x = 8,181,267,354.70/104,485.80
  6. Step 6: Final answer
    x = 78,300.28

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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.