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Finding the Fourth Proportional to 122,980.20, 184,437.90 and 38,740.20

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Solution

The fourth proportional to 122,980.20, 184,437.90 and 38,740.20 is: 58,100.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,980.20 : 184,437.90 = 38,740.20 : x
  2. Step 2: Convert to fraction form
    122,980.20/184,437.90 = 38,740.20/x
  3. Step 3: Cross multiply
    122,980.20x = 184,437.90 × 38,740.20
  4. Step 4: Simplify right side
    122,980.20x = 7,145,161,133.58
  5. Step 5: Solve for x
    x = 7,145,161,133.58/122,980.20
  6. Step 6: Final answer
    x = 58,100.09

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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.