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Finding the Fourth Proportional to 148,655.70, 205,144.99 and 80,672.67

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Solution

The fourth proportional to 148,655.70, 205,144.99 and 80,672.67 is: 111,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,655.70 : 205,144.99 = 80,672.67 : x
  2. Step 2: Convert to fraction form
    148,655.70/205,144.99 = 80,672.67/x
  3. Step 3: Cross multiply
    148,655.70x = 205,144.99 × 80,672.67
  4. Step 4: Simplify right side
    148,655.70x = 16,549,594,080.42
  5. Step 5: Solve for x
    x = 16,549,594,080.42/148,655.70
  6. Step 6: Final answer
    x = 111,328.35

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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.