Home / 99,628.80-149,443.20-92,025.60

Finding the Fourth Proportional to 99,628.80, 149,443.20 and 92,025.60

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Solution

The fourth proportional to 99,628.80, 149,443.20 and 92,025.60 is: 138,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,628.80 : 149,443.20 = 92,025.60 : x
  2. Step 2: Convert to fraction form
    99,628.80/149,443.20 = 92,025.60/x
  3. Step 3: Cross multiply
    99,628.80x = 149,443.20 × 92,025.60
  4. Step 4: Simplify right side
    99,628.80x = 13,752,600,145.92
  5. Step 5: Solve for x
    x = 13,752,600,145.92/99,628.80
  6. Step 6: Final answer
    x = 138,038.40

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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.