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Finding the Fourth Proportional to 127,672.40, 176,187.90 and 73,967.80

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Solution

The fourth proportional to 127,672.40, 176,187.90 and 73,967.80 is: 102,075.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,672.40 : 176,187.90 = 73,967.80 : x
  2. Step 2: Convert to fraction form
    127,672.40/176,187.90 = 73,967.80/x
  3. Step 3: Cross multiply
    127,672.40x = 176,187.90 × 73,967.80
  4. Step 4: Simplify right side
    127,672.40x = 13,032,231,349.62
  5. Step 5: Solve for x
    x = 13,032,231,349.62/127,672.40
  6. Step 6: Final answer
    x = 102,075.56

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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.