Home / 142,323.60-196,392.96-78,651.12

Finding the Fourth Proportional to 142,323.60, 196,392.96 and 78,651.12

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Solution

The fourth proportional to 142,323.60, 196,392.96 and 78,651.12 is: 108,531.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,323.60 : 196,392.96 = 78,651.12 : x
  2. Step 2: Convert to fraction form
    142,323.60/196,392.96 = 78,651.12/x
  3. Step 3: Cross multiply
    142,323.60x = 196,392.96 × 78,651.12
  4. Step 4: Simplify right side
    142,323.60x = 15,446,526,264.12
  5. Step 5: Solve for x
    x = 15,446,526,264.12/142,323.60
  6. Step 6: Final answer
    x = 108,531.03

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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.