Home / 102,120.05-153,188.13-31,048.79

Finding the Fourth Proportional to 102,120.05, 153,188.13 and 31,048.79

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Solution

The fourth proportional to 102,120.05, 153,188.13 and 31,048.79 is: 46,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,120.05 : 153,188.13 = 31,048.79 : x
  2. Step 2: Convert to fraction form
    102,120.05/153,188.13 = 31,048.79/x
  3. Step 3: Cross multiply
    102,120.05x = 153,188.13 × 31,048.79
  4. Step 4: Simplify right side
    102,120.05x = 4,756,305,429.35
  5. Step 5: Solve for x
    x = 4,756,305,429.35/102,120.05
  6. Step 6: Final answer
    x = 46,575.63

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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.