Home / 115,515.54-159,364-70,186.20

Finding the Fourth Proportional to 115,515.54, 159,364 and 70,186.20

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Solution

The fourth proportional to 115,515.54, 159,364 and 70,186.20 is: 96,828.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,515.54 : 159,364 = 70,186.20 : x
  2. Step 2: Convert to fraction form
    115,515.54/159,364 = 70,186.20/x
  3. Step 3: Cross multiply
    115,515.54x = 159,364 × 70,186.20
  4. Step 4: Simplify right side
    115,515.54x = 11,185,153,576.80
  5. Step 5: Solve for x
    x = 11,185,153,576.80/115,515.54
  6. Step 6: Final answer
    x = 96,828.13

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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.