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Finding the Fourth Proportional to 113,340, 156,409.20 and 63,037.92

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Solution

The fourth proportional to 113,340, 156,409.20 and 63,037.92 is: 86,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,340 : 156,409.20 = 63,037.92 : x
  2. Step 2: Convert to fraction form
    113,340/156,409.20 = 63,037.92/x
  3. Step 3: Cross multiply
    113,340x = 156,409.20 × 63,037.92
  4. Step 4: Simplify right side
    113,340x = 9,859,710,636.86
  5. Step 5: Solve for x
    x = 9,859,710,636.86/113,340
  6. Step 6: Final answer
    x = 86,992.33

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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.