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Finding the Fourth Proportional to 99,459.70, 149,189.55 and 40,297.30

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Solution

The fourth proportional to 99,459.70, 149,189.55 and 40,297.30 is: 60,445.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,459.70 : 149,189.55 = 40,297.30 : x
  2. Step 2: Convert to fraction form
    99,459.70/149,189.55 = 40,297.30/x
  3. Step 3: Cross multiply
    99,459.70x = 149,189.55 × 40,297.30
  4. Step 4: Simplify right side
    99,459.70x = 6,011,936,053.22
  5. Step 5: Solve for x
    x = 6,011,936,053.22/99,459.70
  6. Step 6: Final answer
    x = 60,445.95

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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.