Home / 142,327.64-196,405.08-78,663.80

Finding the Fourth Proportional to 142,327.64, 196,405.08 and 78,663.80

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Solution

The fourth proportional to 142,327.64, 196,405.08 and 78,663.80 is: 108,552.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,327.64 : 196,405.08 = 78,663.80 : x
  2. Step 2: Convert to fraction form
    142,327.64/196,405.08 = 78,663.80/x
  3. Step 3: Cross multiply
    142,327.64x = 196,405.08 × 78,663.80
  4. Step 4: Simplify right side
    142,327.64x = 15,449,969,932.10
  5. Step 5: Solve for x
    x = 15,449,969,932.10/142,327.64
  6. Step 6: Final answer
    x = 108,552.14

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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.