Home / 112,120.43-154,718.84-61,819.79

Finding the Fourth Proportional to 112,120.43, 154,718.84 and 61,819.79

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Solution

The fourth proportional to 112,120.43, 154,718.84 and 61,819.79 is: 85,307.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,120.43 : 154,718.84 = 61,819.79 : x
  2. Step 2: Convert to fraction form
    112,120.43/154,718.84 = 61,819.79/x
  3. Step 3: Cross multiply
    112,120.43x = 154,718.84 × 61,819.79
  4. Step 4: Simplify right side
    112,120.43x = 9,564,685,888.74
  5. Step 5: Solve for x
    x = 9,564,685,888.74/112,120.43
  6. Step 6: Final answer
    x = 85,307.25

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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.