Home / 120,406.96-166,154.28-66,688.78

Finding the Fourth Proportional to 120,406.96, 166,154.28 and 66,688.78

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Solution

The fourth proportional to 120,406.96, 166,154.28 and 66,688.78 is: 92,026.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,406.96 : 166,154.28 = 66,688.78 : x
  2. Step 2: Convert to fraction form
    120,406.96/166,154.28 = 66,688.78/x
  3. Step 3: Cross multiply
    120,406.96x = 166,154.28 × 66,688.78
  4. Step 4: Simplify right side
    120,406.96x = 11,080,626,224.98
  5. Step 5: Solve for x
    x = 11,080,626,224.98/120,406.96
  6. Step 6: Final answer
    x = 92,026.46

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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.