Home / 142,364.72-196,453.44-78,697.50

Finding the Fourth Proportional to 142,364.72, 196,453.44 and 78,697.50

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Solution

The fourth proportional to 142,364.72, 196,453.44 and 78,697.50 is: 108,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,364.72 : 196,453.44 = 78,697.50 : x
  2. Step 2: Convert to fraction form
    142,364.72/196,453.44 = 78,697.50/x
  3. Step 3: Cross multiply
    142,364.72x = 196,453.44 × 78,697.50
  4. Step 4: Simplify right side
    142,364.72x = 15,460,394,594.40
  5. Step 5: Solve for x
    x = 15,460,394,594.40/142,364.72
  6. Step 6: Final answer
    x = 108,597.10

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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.