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Finding the Fourth Proportional to 126,167.90, 174,138.72 and 72,482.51

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Solution

The fourth proportional to 126,167.90, 174,138.72 and 72,482.51 is: 100,041.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,167.90 : 174,138.72 = 72,482.51 : x
  2. Step 2: Convert to fraction form
    126,167.90/174,138.72 = 72,482.51/x
  3. Step 3: Cross multiply
    126,167.90x = 174,138.72 × 72,482.51
  4. Step 4: Simplify right side
    126,167.90x = 12,622,011,677.32
  5. Step 5: Solve for x
    x = 12,622,011,677.32/126,167.90
  6. Step 6: Final answer
    x = 100,041.39

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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.