Home / 111,509.35-154,010.70-73,439.05

Finding the Fourth Proportional to 111,509.35, 154,010.70 and 73,439.05

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Solution

The fourth proportional to 111,509.35, 154,010.70 and 73,439.05 is: 101,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,509.35 : 154,010.70 = 73,439.05 : x
  2. Step 2: Convert to fraction form
    111,509.35/154,010.70 = 73,439.05/x
  3. Step 3: Cross multiply
    111,509.35x = 154,010.70 × 73,439.05
  4. Step 4: Simplify right side
    111,509.35x = 11,310,399,497.84
  5. Step 5: Solve for x
    x = 11,310,399,497.84/111,509.35
  6. Step 6: Final answer
    x = 101,430.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.