Home / 141,985.12-195,939.48-78,323.08

Finding the Fourth Proportional to 141,985.12, 195,939.48 and 78,323.08

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Solution

The fourth proportional to 141,985.12, 195,939.48 and 78,323.08 is: 108,085.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,985.12 : 195,939.48 = 78,323.08 : x
  2. Step 2: Convert to fraction form
    141,985.12/195,939.48 = 78,323.08/x
  3. Step 3: Cross multiply
    141,985.12x = 195,939.48 × 78,323.08
  4. Step 4: Simplify right side
    141,985.12x = 15,346,583,567.20
  5. Step 5: Solve for x
    x = 15,346,583,567.20/141,985.12
  6. Step 6: Final answer
    x = 108,085.86

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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.