Home / 142,941.76-197,252.82-79,278.19

Finding the Fourth Proportional to 142,941.76, 197,252.82 and 79,278.19

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Solution

The fourth proportional to 142,941.76, 197,252.82 and 79,278.19 is: 109,400.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,941.76 : 197,252.82 = 79,278.19 : x
  2. Step 2: Convert to fraction form
    142,941.76/197,252.82 = 79,278.19/x
  3. Step 3: Cross multiply
    142,941.76x = 197,252.82 × 79,278.19
  4. Step 4: Simplify right side
    142,941.76x = 15,637,846,048.86
  5. Step 5: Solve for x
    x = 15,637,846,048.86/142,941.76
  6. Step 6: Final answer
    x = 109,400.12

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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.