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Finding the Fourth Proportional to 112,051.20, 168,076.80 and 70,579.20

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Solution

The fourth proportional to 112,051.20, 168,076.80 and 70,579.20 is: 105,868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,051.20 : 168,076.80 = 70,579.20 : x
  2. Step 2: Convert to fraction form
    112,051.20/168,076.80 = 70,579.20/x
  3. Step 3: Cross multiply
    112,051.20x = 168,076.80 × 70,579.20
  4. Step 4: Simplify right side
    112,051.20x = 11,862,726,082.56
  5. Step 5: Solve for x
    x = 11,862,726,082.56/112,051.20
  6. Step 6: Final answer
    x = 105,868.80

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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.