Home / 138,974.26-191,784.47-75,312.06

Finding the Fourth Proportional to 138,974.26, 191,784.47 and 75,312.06

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Solution

The fourth proportional to 138,974.26, 191,784.47 and 75,312.06 is: 103,930.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,974.26 : 191,784.47 = 75,312.06 : x
  2. Step 2: Convert to fraction form
    138,974.26/191,784.47 = 75,312.06/x
  3. Step 3: Cross multiply
    138,974.26x = 191,784.47 × 75,312.06
  4. Step 4: Simplify right side
    138,974.26x = 14,443,683,511.71
  5. Step 5: Solve for x
    x = 14,443,683,511.71/138,974.26
  6. Step 6: Final answer
    x = 103,930.64

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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.