Home / 127,977.23-191,965.80-68,731.40

Finding the Fourth Proportional to 127,977.23, 191,965.80 and 68,731.40

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Solution

The fourth proportional to 127,977.23, 191,965.80 and 68,731.40 is: 103,097.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,977.23 : 191,965.80 = 68,731.40 : x
  2. Step 2: Convert to fraction form
    127,977.23/191,965.80 = 68,731.40/x
  3. Step 3: Cross multiply
    127,977.23x = 191,965.80 × 68,731.40
  4. Step 4: Simplify right side
    127,977.23x = 13,194,078,186.12
  5. Step 5: Solve for x
    x = 13,194,078,186.12/127,977.23
  6. Step 6: Final answer
    x = 103,097.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.