Home / 112,172.28-154,746.06-71,866.68

Finding the Fourth Proportional to 112,172.28, 154,746.06 and 71,866.68

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Solution

The fourth proportional to 112,172.28, 154,746.06 and 71,866.68 is: 99,142.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,172.28 : 154,746.06 = 71,866.68 : x
  2. Step 2: Convert to fraction form
    112,172.28/154,746.06 = 71,866.68/x
  3. Step 3: Cross multiply
    112,172.28x = 154,746.06 × 71,866.68
  4. Step 4: Simplify right side
    112,172.28x = 11,121,085,575.28
  5. Step 5: Solve for x
    x = 11,121,085,575.28/112,172.28
  6. Step 6: Final answer
    x = 99,142.90

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1.5x scale

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.