Home / 137,731.24-190,038.18-81,147.88

Finding the Fourth Proportional to 137,731.24, 190,038.18 and 81,147.88

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Solution

The fourth proportional to 137,731.24, 190,038.18 and 81,147.88 is: 111,965.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,731.24 : 190,038.18 = 81,147.88 : x
  2. Step 2: Convert to fraction form
    137,731.24/190,038.18 = 81,147.88/x
  3. Step 3: Cross multiply
    137,731.24x = 190,038.18 × 81,147.88
  4. Step 4: Simplify right side
    137,731.24x = 15,421,195,426.06
  5. Step 5: Solve for x
    x = 15,421,195,426.06/137,731.24
  6. Step 6: Final answer
    x = 111,965.85

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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.