Home / 112,986.36-169,285.14-79,646.76

Finding the Fourth Proportional to 112,986.36, 169,285.14 and 79,646.76

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Solution

The fourth proportional to 112,986.36, 169,285.14 and 79,646.76 is: 119,333.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,986.36 : 169,285.14 = 79,646.76 : x
  2. Step 2: Convert to fraction form
    112,986.36/169,285.14 = 79,646.76/x
  3. Step 3: Cross multiply
    112,986.36x = 169,285.14 × 79,646.76
  4. Step 4: Simplify right side
    112,986.36x = 13,483,012,917.15
  5. Step 5: Solve for x
    x = 13,483,012,917.15/112,986.36
  6. Step 6: Final answer
    x = 119,333.10

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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.