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Finding the Fourth Proportional to 99,662.60, 149,484.18 and 40,501.80

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Solution

The fourth proportional to 99,662.60, 149,484.18 and 40,501.80 is: 60,748.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,662.60 : 149,484.18 = 40,501.80 : x
  2. Step 2: Convert to fraction form
    99,662.60/149,484.18 = 40,501.80/x
  3. Step 3: Cross multiply
    99,662.60x = 149,484.18 × 40,501.80
  4. Step 4: Simplify right side
    99,662.60x = 6,054,378,361.52
  5. Step 5: Solve for x
    x = 6,054,378,361.52/99,662.60
  6. Step 6: Final answer
    x = 60,748.75

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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.