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Finding the Fourth Proportional to 137,411.76, 205,849.20 and 94,709.60

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Solution

The fourth proportional to 137,411.76, 205,849.20 and 94,709.60 is: 141,879.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,411.76 : 205,849.20 = 94,709.60 : x
  2. Step 2: Convert to fraction form
    137,411.76/205,849.20 = 94,709.60/x
  3. Step 3: Cross multiply
    137,411.76x = 205,849.20 × 94,709.60
  4. Step 4: Simplify right side
    137,411.76x = 19,495,895,392.32
  5. Step 5: Solve for x
    x = 19,495,895,392.32/137,411.76
  6. Step 6: Final answer
    x = 141,879.38

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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.