Home / 151,213.05-208,586.21-90,748.98

Finding the Fourth Proportional to 151,213.05, 208,586.21 and 90,748.98

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Solution

The fourth proportional to 151,213.05, 208,586.21 and 90,748.98 is: 125,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,213.05 : 208,586.21 = 90,748.98 : x
  2. Step 2: Convert to fraction form
    151,213.05/208,586.21 = 90,748.98/x
  3. Step 3: Cross multiply
    151,213.05x = 208,586.21 × 90,748.98
  4. Step 4: Simplify right side
    151,213.05x = 18,928,985,345.82
  5. Step 5: Solve for x
    x = 18,928,985,345.82/151,213.05
  6. Step 6: Final answer
    x = 125,180.90

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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.