Home / 149,430.42-206,212.67-81,447.40

Finding the Fourth Proportional to 149,430.42, 206,212.67 and 81,447.40

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Solution

The fourth proportional to 149,430.42, 206,212.67 and 81,447.40 is: 112,396.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,430.42 : 206,212.67 = 81,447.40 : x
  2. Step 2: Convert to fraction form
    149,430.42/206,212.67 = 81,447.40/x
  3. Step 3: Cross multiply
    149,430.42x = 206,212.67 × 81,447.40
  4. Step 4: Simplify right side
    149,430.42x = 16,795,485,818.56
  5. Step 5: Solve for x
    x = 16,795,485,818.56/149,430.42
  6. Step 6: Final answer
    x = 112,396.70

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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.