Home / 123,357.04-170,234.15-72,370.64

Finding the Fourth Proportional to 123,357.04, 170,234.15 and 72,370.64

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Solution

The fourth proportional to 123,357.04, 170,234.15 and 72,370.64 is: 99,872.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,357.04 : 170,234.15 = 72,370.64 : x
  2. Step 2: Convert to fraction form
    123,357.04/170,234.15 = 72,370.64/x
  3. Step 3: Cross multiply
    123,357.04x = 170,234.15 × 72,370.64
  4. Step 4: Simplify right side
    123,357.04x = 12,319,954,449.09
  5. Step 5: Solve for x
    x = 12,319,954,449.09/123,357.04
  6. Step 6: Final answer
    x = 99,872.33

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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.