Home / 112,678.56-168,901.03-70,461.75

Finding the Fourth Proportional to 112,678.56, 168,901.03 and 70,461.75

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Solution

The fourth proportional to 112,678.56, 168,901.03 and 70,461.75 is: 105,619.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,678.56 : 168,901.03 = 70,461.75 : x
  2. Step 2: Convert to fraction form
    112,678.56/168,901.03 = 70,461.75/x
  3. Step 3: Cross multiply
    112,678.56x = 168,901.03 × 70,461.75
  4. Step 4: Simplify right side
    112,678.56x = 11,901,061,921.99
  5. Step 5: Solve for x
    x = 11,901,061,921.99/112,678.56
  6. Step 6: Final answer
    x = 105,619.58

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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.