Home / 112,972.20-169,409.70-56,790.60

Finding the Fourth Proportional to 112,972.20, 169,409.70 and 56,790.60

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Solution

The fourth proportional to 112,972.20, 169,409.70 and 56,790.60 is: 85,161.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,972.20 : 169,409.70 = 56,790.60 : x
  2. Step 2: Convert to fraction form
    112,972.20/169,409.70 = 56,790.60/x
  3. Step 3: Cross multiply
    112,972.20x = 169,409.70 × 56,790.60
  4. Step 4: Simplify right side
    112,972.20x = 9,620,878,508.82
  5. Step 5: Solve for x
    x = 9,620,878,508.82/112,972.20
  6. Step 6: Final answer
    x = 85,161.47

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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.