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Finding the Fourth Proportional to 125,284.59, 172,888.83 and 74,327.49

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Solution

The fourth proportional to 125,284.59, 172,888.83 and 74,327.49 is: 102,569.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,284.59 : 172,888.83 = 74,327.49 : x
  2. Step 2: Convert to fraction form
    125,284.59/172,888.83 = 74,327.49/x
  3. Step 3: Cross multiply
    125,284.59x = 172,888.83 × 74,327.49
  4. Step 4: Simplify right side
    125,284.59x = 12,850,392,782.94
  5. Step 5: Solve for x
    x = 12,850,392,782.94/125,284.59
  6. Step 6: Final answer
    x = 102,569.62

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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.