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Finding the Fourth Proportional to 117,407.58, 162,011.75 and 66,424.96

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Solution

The fourth proportional to 117,407.58, 162,011.75 and 66,424.96 is: 91,660.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,407.58 : 162,011.75 = 66,424.96 : x
  2. Step 2: Convert to fraction form
    117,407.58/162,011.75 = 66,424.96/x
  3. Step 3: Cross multiply
    117,407.58x = 162,011.75 × 66,424.96
  4. Step 4: Simplify right side
    117,407.58x = 10,761,623,883.67
  5. Step 5: Solve for x
    x = 10,761,623,883.67/117,407.58
  6. Step 6: Final answer
    x = 91,660.39

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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.