Home / 154,485.40-231,728.10-88,130.20

Finding the Fourth Proportional to 154,485.40, 231,728.10 and 88,130.20

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Solution

The fourth proportional to 154,485.40, 231,728.10 and 88,130.20 is: 132,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,485.40 : 231,728.10 = 88,130.20 : x
  2. Step 2: Convert to fraction form
    154,485.40/231,728.10 = 88,130.20/x
  3. Step 3: Cross multiply
    154,485.40x = 231,728.10 × 88,130.20
  4. Step 4: Simplify right side
    154,485.40x = 20,422,243,798.62
  5. Step 5: Solve for x
    x = 20,422,243,798.62/154,485.40
  6. Step 6: Final answer
    x = 132,195.30

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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.