Home / 157,391.12-217,196.88-85,771.76

Finding the Fourth Proportional to 157,391.12, 217,196.88 and 85,771.76

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Solution

The fourth proportional to 157,391.12, 217,196.88 and 85,771.76 is: 118,363.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,391.12 : 217,196.88 = 85,771.76 : x
  2. Step 2: Convert to fraction form
    157,391.12/217,196.88 = 85,771.76/x
  3. Step 3: Cross multiply
    157,391.12x = 217,196.88 × 85,771.76
  4. Step 4: Simplify right side
    157,391.12x = 18,629,358,664.11
  5. Step 5: Solve for x
    x = 18,629,358,664.11/157,391.12
  6. Step 6: Final answer
    x = 118,363.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.