Home / 138,134.88-206,756.64-71,483.40

Finding the Fourth Proportional to 138,134.88, 206,756.64 and 71,483.40

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Solution

The fourth proportional to 138,134.88, 206,756.64 and 71,483.40 is: 106,994.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,134.88 : 206,756.64 = 71,483.40 : x
  2. Step 2: Convert to fraction form
    138,134.88/206,756.64 = 71,483.40/x
  3. Step 3: Cross multiply
    138,134.88x = 206,756.64 × 71,483.40
  4. Step 4: Simplify right side
    138,134.88x = 14,779,667,599.78
  5. Step 5: Solve for x
    x = 14,779,667,599.78/138,134.88
  6. Step 6: Final answer
    x = 106,994.47

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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.