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Finding the Fourth Proportional to 111,972, 154,525.74 and 63,578.46

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Solution

The fourth proportional to 111,972, 154,525.74 and 63,578.46 is: 87,740.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,972 : 154,525.74 = 63,578.46 : x
  2. Step 2: Convert to fraction form
    111,972/154,525.74 = 63,578.46/x
  3. Step 3: Cross multiply
    111,972x = 154,525.74 × 63,578.46
  4. Step 4: Simplify right side
    111,972x = 9,824,508,579.56
  5. Step 5: Solve for x
    x = 9,824,508,579.56/111,972
  6. Step 6: Final answer
    x = 87,740.76

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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.