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Finding the Fourth Proportional to 147,408.98, 203,430.04 and 80,340.98

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Solution

The fourth proportional to 147,408.98, 203,430.04 and 80,340.98 is: 110,873.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,408.98 : 203,430.04 = 80,340.98 : x
  2. Step 2: Convert to fraction form
    147,408.98/203,430.04 = 80,340.98/x
  3. Step 3: Cross multiply
    147,408.98x = 203,430.04 × 80,340.98
  4. Step 4: Simplify right side
    147,408.98x = 16,343,768,775.04
  5. Step 5: Solve for x
    x = 16,343,768,775.04/147,408.98
  6. Step 6: Final answer
    x = 110,873.63

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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.