Home / 149,472.12-206,271.42-85,813.80

Finding the Fourth Proportional to 149,472.12, 206,271.42 and 85,813.80

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Solution

The fourth proportional to 149,472.12, 206,271.42 and 85,813.80 is: 118,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,472.12 : 206,271.42 = 85,813.80 : x
  2. Step 2: Convert to fraction form
    149,472.12/206,271.42 = 85,813.80/x
  3. Step 3: Cross multiply
    149,472.12x = 206,271.42 × 85,813.80
  4. Step 4: Simplify right side
    149,472.12x = 17,700,934,381.60
  5. Step 5: Solve for x
    x = 17,700,934,381.60/149,472.12
  6. Step 6: Final answer
    x = 118,422.98

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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.