Home / 130,485.45-195,728.17-31,989.45

Finding the Fourth Proportional to 130,485.45, 195,728.17 and 31,989.45

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Solution

The fourth proportional to 130,485.45, 195,728.17 and 31,989.45 is: 47,984.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,485.45 : 195,728.17 = 31,989.45 : x
  2. Step 2: Convert to fraction form
    130,485.45/195,728.17 = 31,989.45/x
  3. Step 3: Cross multiply
    130,485.45x = 195,728.17 × 31,989.45
  4. Step 4: Simplify right side
    130,485.45x = 6,261,235,525.35
  5. Step 5: Solve for x
    x = 6,261,235,525.35/130,485.45
  6. Step 6: Final answer
    x = 47,984.17

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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.