Home / 138,274.14-190,877.13-92,978.40

Finding the Fourth Proportional to 138,274.14, 190,877.13 and 92,978.40

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Solution

The fourth proportional to 138,274.14, 190,877.13 and 92,978.40 is: 128,349.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,274.14 : 190,877.13 = 92,978.40 : x
  2. Step 2: Convert to fraction form
    138,274.14/190,877.13 = 92,978.40/x
  3. Step 3: Cross multiply
    138,274.14x = 190,877.13 × 92,978.40
  4. Step 4: Simplify right side
    138,274.14x = 17,747,450,143.99
  5. Step 5: Solve for x
    x = 17,747,450,143.99/138,274.14
  6. Step 6: Final answer
    x = 128,349.74

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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.