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Finding the Fourth Proportional to 140,869.47, 194,405.90 and 84,269.91

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Solution

The fourth proportional to 140,869.47, 194,405.90 and 84,269.91 is: 116,296.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,869.47 : 194,405.90 = 84,269.91 : x
  2. Step 2: Convert to fraction form
    140,869.47/194,405.90 = 84,269.91/x
  3. Step 3: Cross multiply
    140,869.47x = 194,405.90 × 84,269.91
  4. Step 4: Simplify right side
    140,869.47x = 16,382,567,275.12
  5. Step 5: Solve for x
    x = 16,382,567,275.12/140,869.47
  6. Step 6: Final answer
    x = 116,296.08

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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.