Home / 99,990.12-149,970.44-36,795.57

Finding the Fourth Proportional to 99,990.12, 149,970.44 and 36,795.57

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Solution

The fourth proportional to 99,990.12, 149,970.44 and 36,795.57 is: 55,187.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,990.12 : 149,970.44 = 36,795.57 : x
  2. Step 2: Convert to fraction form
    99,990.12/149,970.44 = 36,795.57/x
  3. Step 3: Cross multiply
    99,990.12x = 149,970.44 × 36,795.57
  4. Step 4: Simplify right side
    99,990.12x = 5,518,247,145.58
  5. Step 5: Solve for x
    x = 5,518,247,145.58/99,990.12
  6. Step 6: Final answer
    x = 55,187.92

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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.