Home / 154,637.80-231,315.90-145,191.40

Finding the Fourth Proportional to 154,637.80, 231,315.90 and 145,191.40

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Solution

The fourth proportional to 154,637.80, 231,315.90 and 145,191.40 is: 217,185.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,637.80 : 231,315.90 = 145,191.40 : x
  2. Step 2: Convert to fraction form
    154,637.80/231,315.90 = 145,191.40/x
  3. Step 3: Cross multiply
    154,637.80x = 231,315.90 × 145,191.40
  4. Step 4: Simplify right side
    154,637.80x = 33,585,079,363.26
  5. Step 5: Solve for x
    x = 33,585,079,363.26/154,637.80
  6. Step 6: Final answer
    x = 217,185.44

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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.