Home / 135,446.79-186,918.53-78,085.05

Finding the Fourth Proportional to 135,446.79, 186,918.53 and 78,085.05

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Solution

The fourth proportional to 135,446.79, 186,918.53 and 78,085.05 is: 107,758.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,446.79 : 186,918.53 = 78,085.05 : x
  2. Step 2: Convert to fraction form
    135,446.79/186,918.53 = 78,085.05/x
  3. Step 3: Cross multiply
    135,446.79x = 186,918.53 × 78,085.05
  4. Step 4: Simplify right side
    135,446.79x = 14,595,542,370.55
  5. Step 5: Solve for x
    x = 14,595,542,370.55/135,446.79
  6. Step 6: Final answer
    x = 107,758.50

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1.5x scale

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.