Home / 112,228.13-154,889.19-64,490.78

Finding the Fourth Proportional to 112,228.13, 154,889.19 and 64,490.78

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Solution

The fourth proportional to 112,228.13, 154,889.19 and 64,490.78 is: 89,005.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,228.13 : 154,889.19 = 64,490.78 : x
  2. Step 2: Convert to fraction form
    112,228.13/154,889.19 = 64,490.78/x
  3. Step 3: Cross multiply
    112,228.13x = 154,889.19 × 64,490.78
  4. Step 4: Simplify right side
    112,228.13x = 9,988,923,902.22
  5. Step 5: Solve for x
    x = 9,988,923,902.22/112,228.13
  6. Step 6: Final answer
    x = 89,005.53

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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.