Home / 118,987.11-178,535.16-51,539.78

Finding the Fourth Proportional to 118,987.11, 178,535.16 and 51,539.78

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Solution

The fourth proportional to 118,987.11, 178,535.16 and 51,539.78 is: 77,333.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,987.11 : 178,535.16 = 51,539.78 : x
  2. Step 2: Convert to fraction form
    118,987.11/178,535.16 = 51,539.78/x
  3. Step 3: Cross multiply
    118,987.11x = 178,535.16 × 51,539.78
  4. Step 4: Simplify right side
    118,987.11x = 9,201,663,315.00
  5. Step 5: Solve for x
    x = 9,201,663,315.00/118,987.11
  6. Step 6: Final answer
    x = 77,333.28

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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.