Home / 132,451.45-182,780.40-72,021.58

Finding the Fourth Proportional to 132,451.45, 182,780.40 and 72,021.58

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Solution

The fourth proportional to 132,451.45, 182,780.40 and 72,021.58 is: 99,388.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,451.45 : 182,780.40 = 72,021.58 : x
  2. Step 2: Convert to fraction form
    132,451.45/182,780.40 = 72,021.58/x
  3. Step 3: Cross multiply
    132,451.45x = 182,780.40 × 72,021.58
  4. Step 4: Simplify right side
    132,451.45x = 13,164,133,201.03
  5. Step 5: Solve for x
    x = 13,164,133,201.03/132,451.45
  6. Step 6: Final answer
    x = 99,388.37

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1.5x scale

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.