Home / 128,115.04-192,169.92-42,732.08

Finding the Fourth Proportional to 128,115.04, 192,169.92 and 42,732.08

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Solution

The fourth proportional to 128,115.04, 192,169.92 and 42,732.08 is: 64,097.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115.04 : 192,169.92 = 42,732.08 : x
  2. Step 2: Convert to fraction form
    128,115.04/192,169.92 = 42,732.08/x
  3. Step 3: Cross multiply
    128,115.04x = 192,169.92 × 42,732.08
  4. Step 4: Simplify right side
    128,115.04x = 8,211,820,395.03
  5. Step 5: Solve for x
    x = 8,211,820,395.03/128,115.04
  6. Step 6: Final answer
    x = 64,097.24

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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.