Home / 112,385.36-168,308.74-81,908.82

Finding the Fourth Proportional to 112,385.36, 168,308.74 and 81,908.82

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Solution

The fourth proportional to 112,385.36, 168,308.74 and 81,908.82 is: 122,666.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,385.36 : 168,308.74 = 81,908.82 : x
  2. Step 2: Convert to fraction form
    112,385.36/168,308.74 = 81,908.82/x
  3. Step 3: Cross multiply
    112,385.36x = 168,308.74 × 81,908.82
  4. Step 4: Simplify right side
    112,385.36x = 13,785,970,289.09
  5. Step 5: Solve for x
    x = 13,785,970,289.09/112,385.36
  6. Step 6: Final answer
    x = 122,666.96

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1.5x scale

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.