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Finding the Fourth Proportional to 112,666.58, 155,530.14 and 74,449.97

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Solution

The fourth proportional to 112,666.58, 155,530.14 and 74,449.97 is: 102,774.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,666.58 : 155,530.14 = 74,449.97 : x
  2. Step 2: Convert to fraction form
    112,666.58/155,530.14 = 74,449.97/x
  3. Step 3: Cross multiply
    112,666.58x = 155,530.14 × 74,449.97
  4. Step 4: Simplify right side
    112,666.58x = 11,579,214,366.73
  5. Step 5: Solve for x
    x = 11,579,214,366.73/112,666.58
  6. Step 6: Final answer
    x = 102,774.17

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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.