Home / 142,197.06-196,228.18-78,533.48

Finding the Fourth Proportional to 142,197.06, 196,228.18 and 78,533.48

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Solution

The fourth proportional to 142,197.06, 196,228.18 and 78,533.48 is: 108,374.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,197.06 : 196,228.18 = 78,533.48 : x
  2. Step 2: Convert to fraction form
    142,197.06/196,228.18 = 78,533.48/x
  3. Step 3: Cross multiply
    142,197.06x = 196,228.18 × 78,533.48
  4. Step 4: Simplify right side
    142,197.06x = 15,410,481,849.47
  5. Step 5: Solve for x
    x = 15,410,481,849.47/142,197.06
  6. Step 6: Final answer
    x = 108,374.12

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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.