Home / 146,021.90-201,509.82-81,490.46

Finding the Fourth Proportional to 146,021.90, 201,509.82 and 81,490.46

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Solution

The fourth proportional to 146,021.90, 201,509.82 and 81,490.46 is: 112,456.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,021.90 : 201,509.82 = 81,490.46 : x
  2. Step 2: Convert to fraction form
    146,021.90/201,509.82 = 81,490.46/x
  3. Step 3: Cross multiply
    146,021.90x = 201,509.82 × 81,490.46
  4. Step 4: Simplify right side
    146,021.90x = 16,421,126,918.77
  5. Step 5: Solve for x
    x = 16,421,126,918.77/146,021.90
  6. Step 6: Final answer
    x = 112,456.61

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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.