Home / 186,845.10-280,266.69-111,987.60

Finding the Fourth Proportional to 186,845.10, 280,266.69 and 111,987.60

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Solution

The fourth proportional to 186,845.10, 280,266.69 and 111,987.60 is: 167,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,845.10 : 280,266.69 = 111,987.60 : x
  2. Step 2: Convert to fraction form
    186,845.10/280,266.69 = 111,987.60/x
  3. Step 3: Cross multiply
    186,845.10x = 280,266.69 × 111,987.60
  4. Step 4: Simplify right side
    186,845.10x = 31,386,393,973.04
  5. Step 5: Solve for x
    x = 31,386,393,973.04/186,845.10
  6. Step 6: Final answer
    x = 167,980.82

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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.