Home / 147,690.50-203,786-83,149.70

Finding the Fourth Proportional to 147,690.50, 203,786 and 83,149.70

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Solution

The fourth proportional to 147,690.50, 203,786 and 83,149.70 is: 114,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,690.50 : 203,786 = 83,149.70 : x
  2. Step 2: Convert to fraction form
    147,690.50/203,786 = 83,149.70/x
  3. Step 3: Cross multiply
    147,690.50x = 203,786 × 83,149.70
  4. Step 4: Simplify right side
    147,690.50x = 16,944,744,764.20
  5. Step 5: Solve for x
    x = 16,944,744,764.20/147,690.50
  6. Step 6: Final answer
    x = 114,731.45

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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.