Home / 186,780.40-279,913.62-80,036.58

Finding the Fourth Proportional to 186,780.40, 279,913.62 and 80,036.58

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Solution

The fourth proportional to 186,780.40, 279,913.62 and 80,036.58 is: 119,944.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,780.40 : 279,913.62 = 80,036.58 : x
  2. Step 2: Convert to fraction form
    186,780.40/279,913.62 = 80,036.58/x
  3. Step 3: Cross multiply
    186,780.40x = 279,913.62 × 80,036.58
  4. Step 4: Simplify right side
    186,780.40x = 22,403,328,840.22
  5. Step 5: Solve for x
    x = 22,403,328,840.22/186,780.40
  6. Step 6: Final answer
    x = 119,944.75

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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.