Home / 111,901.50-154,424.07-64,170.63

Finding the Fourth Proportional to 111,901.50, 154,424.07 and 64,170.63

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Solution

The fourth proportional to 111,901.50, 154,424.07 and 64,170.63 is: 88,555.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,901.50 : 154,424.07 = 64,170.63 : x
  2. Step 2: Convert to fraction form
    111,901.50/154,424.07 = 64,170.63/x
  3. Step 3: Cross multiply
    111,901.50x = 154,424.07 × 64,170.63
  4. Step 4: Simplify right side
    111,901.50x = 9,909,489,859.06
  5. Step 5: Solve for x
    x = 9,909,489,859.06/111,901.50
  6. Step 6: Final answer
    x = 88,555.47

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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.