Home / 157,419.09-217,242.90-85,803.75

Finding the Fourth Proportional to 157,419.09, 217,242.90 and 85,803.75

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Solution

The fourth proportional to 157,419.09, 217,242.90 and 85,803.75 is: 118,411.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,419.09 : 217,242.90 = 85,803.75 : x
  2. Step 2: Convert to fraction form
    157,419.09/217,242.90 = 85,803.75/x
  3. Step 3: Cross multiply
    157,419.09x = 217,242.90 × 85,803.75
  4. Step 4: Simplify right side
    157,419.09x = 18,640,255,480.88
  5. Step 5: Solve for x
    x = 18,640,255,480.88/157,419.09
  6. Step 6: Final answer
    x = 118,411.66

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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.