Home / 100,903.08-151,354.20-30,782.16

Finding the Fourth Proportional to 100,903.08, 151,354.20 and 30,782.16

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Solution

The fourth proportional to 100,903.08, 151,354.20 and 30,782.16 is: 46,173.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,903.08 : 151,354.20 = 30,782.16 : x
  2. Step 2: Convert to fraction form
    100,903.08/151,354.20 = 30,782.16/x
  3. Step 3: Cross multiply
    100,903.08x = 151,354.20 × 30,782.16
  4. Step 4: Simplify right side
    100,903.08x = 4,659,009,201.07
  5. Step 5: Solve for x
    x = 4,659,009,201.07/100,903.08
  6. Step 6: Final answer
    x = 46,173.11

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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.