Home / 157,021.16-216,687.60-85,401.76

Finding the Fourth Proportional to 157,021.16, 216,687.60 and 85,401.76

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Solution

The fourth proportional to 157,021.16, 216,687.60 and 85,401.76 is: 117,853.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,021.16 : 216,687.60 = 85,401.76 : x
  2. Step 2: Convert to fraction form
    157,021.16/216,687.60 = 85,401.76/x
  3. Step 3: Cross multiply
    157,021.16x = 216,687.60 × 85,401.76
  4. Step 4: Simplify right side
    157,021.16x = 18,505,502,410.18
  5. Step 5: Solve for x
    x = 18,505,502,410.18/157,021.16
  6. Step 6: Final answer
    x = 117,853.56

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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.