Home / 113,782.77-156,987.86-68,438.07

Finding the Fourth Proportional to 113,782.77, 156,987.86 and 68,438.07

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Solution

The fourth proportional to 113,782.77, 156,987.86 and 68,438.07 is: 94,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,782.77 : 156,987.86 = 68,438.07 : x
  2. Step 2: Convert to fraction form
    113,782.77/156,987.86 = 68,438.07/x
  3. Step 3: Cross multiply
    113,782.77x = 156,987.86 × 68,438.07
  4. Step 4: Simplify right side
    113,782.77x = 10,743,945,809.64
  5. Step 5: Solve for x
    x = 10,743,945,809.64/113,782.77
  6. Step 6: Final answer
    x = 94,425.07

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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.