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Finding the Fourth Proportional to 120,503.10, 166,256.25 and 69,508.98

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Solution

The fourth proportional to 120,503.10, 166,256.25 and 69,508.98 is: 95,900.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,503.10 : 166,256.25 = 69,508.98 : x
  2. Step 2: Convert to fraction form
    120,503.10/166,256.25 = 69,508.98/x
  3. Step 3: Cross multiply
    120,503.10x = 166,256.25 × 69,508.98
  4. Step 4: Simplify right side
    120,503.10x = 11,556,302,356.13
  5. Step 5: Solve for x
    x = 11,556,302,356.13/120,503.10
  6. Step 6: Final answer
    x = 95,900.46

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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.