Home / 139,827.47-192,962.45-76,164.71

Finding the Fourth Proportional to 139,827.47, 192,962.45 and 76,164.71

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Solution

The fourth proportional to 139,827.47, 192,962.45 and 76,164.71 is: 105,107.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,827.47 : 192,962.45 = 76,164.71 : x
  2. Step 2: Convert to fraction form
    139,827.47/192,962.45 = 76,164.71/x
  3. Step 3: Cross multiply
    139,827.47x = 192,962.45 × 76,164.71
  4. Step 4: Simplify right side
    139,827.47x = 14,696,928,270.74
  5. Step 5: Solve for x
    x = 14,696,928,270.74/139,827.47
  6. Step 6: Final answer
    x = 105,107.59

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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.