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Finding the Fourth Proportional to 189,312.53, 261,245.25 and 107,649.54

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Solution

The fourth proportional to 189,312.53, 261,245.25 and 107,649.54 is: 148,552.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,312.53 : 261,245.25 = 107,649.54 : x
  2. Step 2: Convert to fraction form
    189,312.53/261,245.25 = 107,649.54/x
  3. Step 3: Cross multiply
    189,312.53x = 261,245.25 × 107,649.54
  4. Step 4: Simplify right side
    189,312.53x = 28,122,930,989.69
  5. Step 5: Solve for x
    x = 28,122,930,989.69/189,312.53
  6. Step 6: Final answer
    x = 148,552.93

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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.