Home / 122,728.16-169,421.92-92,525.76

Finding the Fourth Proportional to 122,728.16, 169,421.92 and 92,525.76

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Solution

The fourth proportional to 122,728.16, 169,421.92 and 92,525.76 is: 127,728.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,728.16 : 169,421.92 = 92,525.76 : x
  2. Step 2: Convert to fraction form
    122,728.16/169,421.92 = 92,525.76/x
  3. Step 3: Cross multiply
    122,728.16x = 169,421.92 × 92,525.76
  4. Step 4: Simplify right side
    122,728.16x = 15,675,891,908.66
  5. Step 5: Solve for x
    x = 15,675,891,908.66/122,728.16
  6. Step 6: Final answer
    x = 127,728.57

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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.