Home / 142,686.45-196,907.22-79,024.20

Finding the Fourth Proportional to 142,686.45, 196,907.22 and 79,024.20

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Solution

The fourth proportional to 142,686.45, 196,907.22 and 79,024.20 is: 109,053.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,686.45 : 196,907.22 = 79,024.20 : x
  2. Step 2: Convert to fraction form
    142,686.45/196,907.22 = 79,024.20/x
  3. Step 3: Cross multiply
    142,686.45x = 196,907.22 × 79,024.20
  4. Step 4: Simplify right side
    142,686.45x = 15,560,435,534.72
  5. Step 5: Solve for x
    x = 15,560,435,534.72/142,686.45
  6. Step 6: Final answer
    x = 109,053.35

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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.