Home / 121,133,042.82-167,162,748.71-66,128,899.32

Finding the Fourth Proportional to 121,133,042.82, 167,162,748.71 and 66,128,899.32

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Solution

The fourth proportional to 121,133,042.82, 167,162,748.71 and 66,128,899.32 is: 91,257,416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,133,042.82 : 167,162,748.71 = 66,128,899.32 : x
  2. Step 2: Convert to fraction form
    121,133,042.82/167,162,748.71 = 66,128,899.32/x
  3. Step 3: Cross multiply
    121,133,042.82x = 167,162,748.71 × 66,128,899.32
  4. Step 4: Simplify right side
    121,133,042.82x = 11,054,288,579,167,406
  5. Step 5: Solve for x
    x = 11,054,288,579,167,406/121,133,042.82
  6. Step 6: Final answer
    x = 91,257,416.82

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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.