Home / 645,391.28-968,133.16-172,074.16

Finding the Fourth Proportional to 645,391.28, 968,133.16 and 172,074.16

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Solution

The fourth proportional to 645,391.28, 968,133.16 and 172,074.16 is: 258,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,391.28 : 968,133.16 = 172,074.16 : x
  2. Step 2: Convert to fraction form
    645,391.28/968,133.16 = 172,074.16/x
  3. Step 3: Cross multiply
    645,391.28x = 968,133.16 × 172,074.16
  4. Step 4: Simplify right side
    645,391.28x = 166,590,700,275.15
  5. Step 5: Solve for x
    x = 166,590,700,275.15/645,391.28
  6. Step 6: Final answer
    x = 258,123.57

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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.