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Finding the Fourth Proportional to 139,624.74, 192,798.48 and 129,494.16

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Solution

The fourth proportional to 139,624.74, 192,798.48 and 129,494.16 is: 178,809.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,624.74 : 192,798.48 = 129,494.16 : x
  2. Step 2: Convert to fraction form
    139,624.74/192,798.48 = 129,494.16/x
  3. Step 3: Cross multiply
    139,624.74x = 192,798.48 × 129,494.16
  4. Step 4: Simplify right side
    139,624.74x = 24,966,277,216.88
  5. Step 5: Solve for x
    x = 24,966,277,216.88/139,624.74
  6. Step 6: Final answer
    x = 178,809.84

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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.