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Finding the Fourth Proportional to 113,497.40, 169,986.90 and 66,841.40

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Solution

The fourth proportional to 113,497.40, 169,986.90 and 66,841.40 is: 100,109.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,497.40 : 169,986.90 = 66,841.40 : x
  2. Step 2: Convert to fraction form
    113,497.40/169,986.90 = 66,841.40/x
  3. Step 3: Cross multiply
    113,497.40x = 169,986.90 × 66,841.40
  4. Step 4: Simplify right side
    113,497.40x = 11,362,162,377.66
  5. Step 5: Solve for x
    x = 11,362,162,377.66/113,497.40
  6. Step 6: Final answer
    x = 100,109.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.