Home / 138,928.85-191,722.01-75,266.64

Finding the Fourth Proportional to 138,928.85, 191,722.01 and 75,266.64

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Solution

The fourth proportional to 138,928.85, 191,722.01 and 75,266.64 is: 103,868.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,928.85 : 191,722.01 = 75,266.64 : x
  2. Step 2: Convert to fraction form
    138,928.85/191,722.01 = 75,266.64/x
  3. Step 3: Cross multiply
    138,928.85x = 191,722.01 × 75,266.64
  4. Step 4: Simplify right side
    138,928.85x = 14,430,271,130.41
  5. Step 5: Solve for x
    x = 14,430,271,130.41/138,928.85
  6. Step 6: Final answer
    x = 103,868.07

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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.