Home / 142,940.25-197,259.08-79,282.14

Finding the Fourth Proportional to 142,940.25, 197,259.08 and 79,282.14

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Solution

The fourth proportional to 142,940.25, 197,259.08 and 79,282.14 is: 109,410.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,940.25 : 197,259.08 = 79,282.14 : x
  2. Step 2: Convert to fraction form
    142,940.25/197,259.08 = 79,282.14/x
  3. Step 3: Cross multiply
    142,940.25x = 197,259.08 × 79,282.14
  4. Step 4: Simplify right side
    142,940.25x = 15,639,121,600.42
  5. Step 5: Solve for x
    x = 15,639,121,600.42/142,940.25
  6. Step 6: Final answer
    x = 109,410.20

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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.