Home / 112,386.90-168,579.72-45,826.78

Finding the Fourth Proportional to 112,386.90, 168,579.72 and 45,826.78

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Solution

The fourth proportional to 112,386.90, 168,579.72 and 45,826.78 is: 68,739.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,386.90 : 168,579.72 = 45,826.78 : x
  2. Step 2: Convert to fraction form
    112,386.90/168,579.72 = 45,826.78/x
  3. Step 3: Cross multiply
    112,386.90x = 168,579.72 × 45,826.78
  4. Step 4: Simplify right side
    112,386.90x = 7,725,465,740.90
  5. Step 5: Solve for x
    x = 7,725,465,740.90/112,386.90
  6. Step 6: Final answer
    x = 68,739.91

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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.