Home / 154,421.40-231,632.10-54,580.80

Finding the Fourth Proportional to 154,421.40, 231,632.10 and 54,580.80

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Solution

The fourth proportional to 154,421.40, 231,632.10 and 54,580.80 is: 81,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,421.40 : 231,632.10 = 54,580.80 : x
  2. Step 2: Convert to fraction form
    154,421.40/231,632.10 = 54,580.80/x
  3. Step 3: Cross multiply
    154,421.40x = 231,632.10 × 54,580.80
  4. Step 4: Simplify right side
    154,421.40x = 12,642,665,323.68
  5. Step 5: Solve for x
    x = 12,642,665,323.68/154,421.40
  6. Step 6: Final answer
    x = 81,871.20

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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.