Home / 142,219.47-196,252.87-78,552.25

Finding the Fourth Proportional to 142,219.47, 196,252.87 and 78,552.25

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Solution

The fourth proportional to 142,219.47, 196,252.87 and 78,552.25 is: 108,396.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,219.47 : 196,252.87 = 78,552.25 : x
  2. Step 2: Convert to fraction form
    142,219.47/196,252.87 = 78,552.25/x
  3. Step 3: Cross multiply
    142,219.47x = 196,252.87 × 78,552.25
  4. Step 4: Simplify right side
    142,219.47x = 15,416,104,507.46
  5. Step 5: Solve for x
    x = 15,416,104,507.46/142,219.47
  6. Step 6: Final answer
    x = 108,396.58

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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.