Home / 112,621.68-155,410.92-62,321.76

Finding the Fourth Proportional to 112,621.68, 155,410.92 and 62,321.76

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Solution

The fourth proportional to 112,621.68, 155,410.92 and 62,321.76 is: 86,000.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,621.68 : 155,410.92 = 62,321.76 : x
  2. Step 2: Convert to fraction form
    112,621.68/155,410.92 = 62,321.76/x
  3. Step 3: Cross multiply
    112,621.68x = 155,410.92 × 62,321.76
  4. Step 4: Simplify right side
    112,621.68x = 9,685,482,057.62
  5. Step 5: Solve for x
    x = 9,685,482,057.62/112,621.68
  6. Step 6: Final answer
    x = 86,000.16

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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.