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Finding the Fourth Proportional to 128,026.86, 176,760.30 and 114,575

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Solution

The fourth proportional to 128,026.86, 176,760.30 and 114,575 is: 158,187.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,026.86 : 176,760.30 = 114,575 : x
  2. Step 2: Convert to fraction form
    128,026.86/176,760.30 = 114,575/x
  3. Step 3: Cross multiply
    128,026.86x = 176,760.30 × 114,575
  4. Step 4: Simplify right side
    128,026.86x = 20,252,311,372.50
  5. Step 5: Solve for x
    x = 20,252,311,372.50/128,026.86
  6. Step 6: Final answer
    x = 158,187.99

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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.