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Finding the Fourth Proportional to 151,038.40, 226,363.20 and 91,811.20

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Solution

The fourth proportional to 151,038.40, 226,363.20 and 91,811.20 is: 137,598.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,038.40 : 226,363.20 = 91,811.20 : x
  2. Step 2: Convert to fraction form
    151,038.40/226,363.20 = 91,811.20/x
  3. Step 3: Cross multiply
    151,038.40x = 226,363.20 × 91,811.20
  4. Step 4: Simplify right side
    151,038.40x = 20,782,677,027.84
  5. Step 5: Solve for x
    x = 20,782,677,027.84/151,038.40
  6. Step 6: Final answer
    x = 137,598.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.