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Finding the Fourth Proportional to 127,642.32, 176,138.84 and 73,182.81

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Solution

The fourth proportional to 127,642.32, 176,138.84 and 73,182.81 is: 100,987.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,642.32 : 176,138.84 = 73,182.81 : x
  2. Step 2: Convert to fraction form
    127,642.32/176,138.84 = 73,182.81/x
  3. Step 3: Cross multiply
    127,642.32x = 176,138.84 × 73,182.81
  4. Step 4: Simplify right side
    127,642.32x = 12,890,334,895.43
  5. Step 5: Solve for x
    x = 12,890,334,895.43/127,642.32
  6. Step 6: Final answer
    x = 100,987.94

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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.