Home / 128,164.12-192,246.18-49,315.48

Finding the Fourth Proportional to 128,164.12, 192,246.18 and 49,315.48

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Solution

The fourth proportional to 128,164.12, 192,246.18 and 49,315.48 is: 73,973.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,164.12 : 192,246.18 = 49,315.48 : x
  2. Step 2: Convert to fraction form
    128,164.12/192,246.18 = 49,315.48/x
  3. Step 3: Cross multiply
    128,164.12x = 192,246.18 × 49,315.48
  4. Step 4: Simplify right side
    128,164.12x = 9,480,712,644.87
  5. Step 5: Solve for x
    x = 9,480,712,644.87/128,164.12
  6. Step 6: Final answer
    x = 73,973.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.