Home / 102,589.34-141,632.15-78,198.82

Finding the Fourth Proportional to 102,589.34, 141,632.15 and 78,198.82

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Solution

The fourth proportional to 102,589.34, 141,632.15 and 78,198.82 is: 107,959.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,589.34 : 141,632.15 = 78,198.82 : x
  2. Step 2: Convert to fraction form
    102,589.34/141,632.15 = 78,198.82/x
  3. Step 3: Cross multiply
    102,589.34x = 141,632.15 × 78,198.82
  4. Step 4: Simplify right side
    102,589.34x = 11,075,466,258.99
  5. Step 5: Solve for x
    x = 11,075,466,258.99/102,589.34
  6. Step 6: Final answer
    x = 107,959.24

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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.