Home / 99,682.80-149,401.07-85,543.44

Finding the Fourth Proportional to 99,682.80, 149,401.07 and 85,543.44

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Solution

The fourth proportional to 99,682.80, 149,401.07 and 85,543.44 is: 128,209.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,682.80 : 149,401.07 = 85,543.44 : x
  2. Step 2: Convert to fraction form
    99,682.80/149,401.07 = 85,543.44/x
  3. Step 3: Cross multiply
    99,682.80x = 149,401.07 × 85,543.44
  4. Step 4: Simplify right side
    99,682.80x = 12,780,281,307.84
  5. Step 5: Solve for x
    x = 12,780,281,307.84/99,682.80
  6. Step 6: Final answer
    x = 128,209.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.