Home / 100,115.10-150,090.33-46,780.70

Finding the Fourth Proportional to 100,115.10, 150,090.33 and 46,780.70

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Solution

The fourth proportional to 100,115.10, 150,090.33 and 46,780.70 is: 70,132.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,115.10 : 150,090.33 = 46,780.70 : x
  2. Step 2: Convert to fraction form
    100,115.10/150,090.33 = 46,780.70/x
  3. Step 3: Cross multiply
    100,115.10x = 150,090.33 × 46,780.70
  4. Step 4: Simplify right side
    100,115.10x = 7,021,330,700.63
  5. Step 5: Solve for x
    x = 7,021,330,700.63/100,115.10
  6. Step 6: Final answer
    x = 70,132.58

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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.