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Finding the Fourth Proportional to 99,103.60, 148,655.40 and 80,441.20

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Solution

The fourth proportional to 99,103.60, 148,655.40 and 80,441.20 is: 120,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,103.60 : 148,655.40 = 80,441.20 : x
  2. Step 2: Convert to fraction form
    99,103.60/148,655.40 = 80,441.20/x
  3. Step 3: Cross multiply
    99,103.60x = 148,655.40 × 80,441.20
  4. Step 4: Simplify right side
    99,103.60x = 11,958,018,762.48
  5. Step 5: Solve for x
    x = 11,958,018,762.48/99,103.60
  6. Step 6: Final answer
    x = 120,661.80

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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.