Home / 159,320.40-219,852-91,336.56

Finding the Fourth Proportional to 159,320.40, 219,852 and 91,336.56

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Solution

The fourth proportional to 159,320.40, 219,852 and 91,336.56 is: 126,038.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,320.40 : 219,852 = 91,336.56 : x
  2. Step 2: Convert to fraction form
    159,320.40/219,852 = 91,336.56/x
  3. Step 3: Cross multiply
    159,320.40x = 219,852 × 91,336.56
  4. Step 4: Simplify right side
    159,320.40x = 20,080,525,389.12
  5. Step 5: Solve for x
    x = 20,080,525,389.12/159,320.40
  6. Step 6: Final answer
    x = 126,038.63

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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.