Home / 112,116.86-154,721.13-61,129.58

Finding the Fourth Proportional to 112,116.86, 154,721.13 and 61,129.58

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Solution

The fourth proportional to 112,116.86, 154,721.13 and 61,129.58 is: 84,358.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,116.86 : 154,721.13 = 61,129.58 : x
  2. Step 2: Convert to fraction form
    112,116.86/154,721.13 = 61,129.58/x
  3. Step 3: Cross multiply
    112,116.86x = 154,721.13 × 61,129.58
  4. Step 4: Simplify right side
    112,116.86x = 9,458,037,694.03
  5. Step 5: Solve for x
    x = 9,458,037,694.03/112,116.86
  6. Step 6: Final answer
    x = 84,358.75

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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.