Home / 141,679.76-195,518.05-78,017.40

Finding the Fourth Proportional to 141,679.76, 195,518.05 and 78,017.40

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Solution

The fourth proportional to 141,679.76, 195,518.05 and 78,017.40 is: 107,664.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,679.76 : 195,518.05 = 78,017.40 : x
  2. Step 2: Convert to fraction form
    141,679.76/195,518.05 = 78,017.40/x
  3. Step 3: Cross multiply
    141,679.76x = 195,518.05 × 78,017.40
  4. Step 4: Simplify right side
    141,679.76x = 15,253,809,914.07
  5. Step 5: Solve for x
    x = 15,253,809,914.07/141,679.76
  6. Step 6: Final answer
    x = 107,664.00

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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.