Home / 100,780.86-151,193.76-30,665.64

Finding the Fourth Proportional to 100,780.86, 151,193.76 and 30,665.64

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Solution

The fourth proportional to 100,780.86, 151,193.76 and 30,665.64 is: 46,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,780.86 : 151,193.76 = 30,665.64 : x
  2. Step 2: Convert to fraction form
    100,780.86/151,193.76 = 30,665.64/x
  3. Step 3: Cross multiply
    100,780.86x = 151,193.76 × 30,665.64
  4. Step 4: Simplify right side
    100,780.86x = 4,636,453,274.66
  5. Step 5: Solve for x
    x = 4,636,453,274.66/100,780.86
  6. Step 6: Final answer
    x = 46,005.30

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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.