Home / 102,789.81-141,853.05-57,469.70

Finding the Fourth Proportional to 102,789.81, 141,853.05 and 57,469.70

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Solution

The fourth proportional to 102,789.81, 141,853.05 and 57,469.70 is: 79,309.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,789.81 : 141,853.05 = 57,469.70 : x
  2. Step 2: Convert to fraction form
    102,789.81/141,853.05 = 57,469.70/x
  3. Step 3: Cross multiply
    102,789.81x = 141,853.05 × 57,469.70
  4. Step 4: Simplify right side
    102,789.81x = 8,152,252,582.22
  5. Step 5: Solve for x
    x = 8,152,252,582.22/102,789.81
  6. Step 6: Final answer
    x = 79,309.93

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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.