Home / 117,420.09-162,001.35-66,427.89

Finding the Fourth Proportional to 117,420.09, 162,001.35 and 66,427.89

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Solution

The fourth proportional to 117,420.09, 162,001.35 and 66,427.89 is: 91,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,420.09 : 162,001.35 = 66,427.89 : x
  2. Step 2: Convert to fraction form
    117,420.09/162,001.35 = 66,427.89/x
  3. Step 3: Cross multiply
    117,420.09x = 162,001.35 × 66,427.89
  4. Step 4: Simplify right side
    117,420.09x = 10,761,407,857.65
  5. Step 5: Solve for x
    x = 10,761,407,857.65/117,420.09
  6. Step 6: Final answer
    x = 91,648.78

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1.5x scale

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.