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Finding the Fourth Proportional to 142,684.24, 196,895.64 and 79,018.24

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Solution

The fourth proportional to 142,684.24, 196,895.64 and 79,018.24 is: 109,040.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,684.24 : 196,895.64 = 79,018.24 : x
  2. Step 2: Convert to fraction form
    142,684.24/196,895.64 = 79,018.24/x
  3. Step 3: Cross multiply
    142,684.24x = 196,895.64 × 79,018.24
  4. Step 4: Simplify right side
    142,684.24x = 15,558,346,936.47
  5. Step 5: Solve for x
    x = 15,558,346,936.47/142,684.24
  6. Step 6: Final answer
    x = 109,040.40

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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.