Home / 138,953.58-191,756.61-75,291.36

Finding the Fourth Proportional to 138,953.58, 191,756.61 and 75,291.36

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Solution

The fourth proportional to 138,953.58, 191,756.61 and 75,291.36 is: 103,902.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,953.58 : 191,756.61 = 75,291.36 : x
  2. Step 2: Convert to fraction form
    138,953.58/191,756.61 = 75,291.36/x
  3. Step 3: Cross multiply
    138,953.58x = 191,756.61 × 75,291.36
  4. Step 4: Simplify right side
    138,953.58x = 14,437,615,955.89
  5. Step 5: Solve for x
    x = 14,437,615,955.89/138,953.58
  6. Step 6: Final answer
    x = 103,902.44

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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.