Home / 105,004.80-157,507.20-75,480.30

Finding the Fourth Proportional to 105,004.80, 157,507.20 and 75,480.30

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Solution

The fourth proportional to 105,004.80, 157,507.20 and 75,480.30 is: 113,220.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,004.80 : 157,507.20 = 75,480.30 : x
  2. Step 2: Convert to fraction form
    105,004.80/157,507.20 = 75,480.30/x
  3. Step 3: Cross multiply
    105,004.80x = 157,507.20 × 75,480.30
  4. Step 4: Simplify right side
    105,004.80x = 11,888,690,708.16
  5. Step 5: Solve for x
    x = 11,888,690,708.16/105,004.80
  6. Step 6: Final answer
    x = 113,220.45

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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.