Home / 99,346.20-149,019.30-91,181.40

Finding the Fourth Proportional to 99,346.20, 149,019.30 and 91,181.40

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Solution

The fourth proportional to 99,346.20, 149,019.30 and 91,181.40 is: 136,772.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,346.20 : 149,019.30 = 91,181.40 : x
  2. Step 2: Convert to fraction form
    99,346.20/149,019.30 = 91,181.40/x
  3. Step 3: Cross multiply
    99,346.20x = 149,019.30 × 91,181.40
  4. Step 4: Simplify right side
    99,346.20x = 13,587,788,401.02
  5. Step 5: Solve for x
    x = 13,587,788,401.02/99,346.20
  6. Step 6: Final answer
    x = 136,772.10

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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.