Home / 100,429.12-150,644.76-30,309.04

Finding the Fourth Proportional to 100,429.12, 150,644.76 and 30,309.04

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Solution

The fourth proportional to 100,429.12, 150,644.76 and 30,309.04 is: 45,463.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,429.12 : 150,644.76 = 30,309.04 : x
  2. Step 2: Convert to fraction form
    100,429.12/150,644.76 = 30,309.04/x
  3. Step 3: Cross multiply
    100,429.12x = 150,644.76 × 30,309.04
  4. Step 4: Simplify right side
    100,429.12x = 4,565,898,056.63
  5. Step 5: Solve for x
    x = 4,565,898,056.63/100,429.12
  6. Step 6: Final answer
    x = 45,463.89

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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.