Home / 123,339.19-170,209.03-72,352.76

Finding the Fourth Proportional to 123,339.19, 170,209.03 and 72,352.76

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Solution

The fourth proportional to 123,339.19, 170,209.03 and 72,352.76 is: 99,847.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,339.19 : 170,209.03 = 72,352.76 : x
  2. Step 2: Convert to fraction form
    123,339.19/170,209.03 = 72,352.76/x
  3. Step 3: Cross multiply
    123,339.19x = 170,209.03 × 72,352.76
  4. Step 4: Simplify right side
    123,339.19x = 12,315,093,097.42
  5. Step 5: Solve for x
    x = 12,315,093,097.42/123,339.19
  6. Step 6: Final answer
    x = 99,847.36

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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.