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Finding the Fourth Proportional to 127,903.66, 176,520.22 and 81,368.80

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Solution

The fourth proportional to 127,903.66, 176,520.22 and 81,368.80 is: 112,297.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,903.66 : 176,520.22 = 81,368.80 : x
  2. Step 2: Convert to fraction form
    127,903.66/176,520.22 = 81,368.80/x
  3. Step 3: Cross multiply
    127,903.66x = 176,520.22 × 81,368.80
  4. Step 4: Simplify right side
    127,903.66x = 14,363,238,477.14
  5. Step 5: Solve for x
    x = 14,363,238,477.14/127,903.66
  6. Step 6: Final answer
    x = 112,297.32

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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.