Home / 123,277.20-170,127.36-72,282.84

Finding the Fourth Proportional to 123,277.20, 170,127.36 and 72,282.84

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Solution

The fourth proportional to 123,277.20, 170,127.36 and 72,282.84 is: 99,753.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,277.20 : 170,127.36 = 72,282.84 : x
  2. Step 2: Convert to fraction form
    123,277.20/170,127.36 = 72,282.84/x
  3. Step 3: Cross multiply
    123,277.20x = 170,127.36 × 72,282.84
  4. Step 4: Simplify right side
    123,277.20x = 12,297,288,742.50
  5. Step 5: Solve for x
    x = 12,297,288,742.50/123,277.20
  6. Step 6: Final answer
    x = 99,753.15

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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.