Home / 115,731.41-159,710.63-67,986.77

Finding the Fourth Proportional to 115,731.41, 159,710.63 and 67,986.77

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Solution

The fourth proportional to 115,731.41, 159,710.63 and 67,986.77 is: 93,822.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,731.41 : 159,710.63 = 67,986.77 : x
  2. Step 2: Convert to fraction form
    115,731.41/159,710.63 = 67,986.77/x
  3. Step 3: Cross multiply
    115,731.41x = 159,710.63 × 67,986.77
  4. Step 4: Simplify right side
    115,731.41x = 10,858,208,729.88
  5. Step 5: Solve for x
    x = 10,858,208,729.88/115,731.41
  6. Step 6: Final answer
    x = 93,822.49

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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.