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Finding the Fourth Proportional to 127,858.80, 176,445.92 and 74,175.80

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Solution

The fourth proportional to 127,858.80, 176,445.92 and 74,175.80 is: 102,363.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,858.80 : 176,445.92 = 74,175.80 : x
  2. Step 2: Convert to fraction form
    127,858.80/176,445.92 = 74,175.80/x
  3. Step 3: Cross multiply
    127,858.80x = 176,445.92 × 74,175.80
  4. Step 4: Simplify right side
    127,858.80x = 13,088,017,272.74
  5. Step 5: Solve for x
    x = 13,088,017,272.74/127,858.80
  6. Step 6: Final answer
    x = 102,363.05

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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.