Home / 112,256.81-154,875.32-71,992.78

Finding the Fourth Proportional to 112,256.81, 154,875.32 and 71,992.78

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Solution

The fourth proportional to 112,256.81, 154,875.32 and 71,992.78 is: 99,324.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,256.81 : 154,875.32 = 71,992.78 : x
  2. Step 2: Convert to fraction form
    112,256.81/154,875.32 = 71,992.78/x
  3. Step 3: Cross multiply
    112,256.81x = 154,875.32 × 71,992.78
  4. Step 4: Simplify right side
    112,256.81x = 11,149,904,840.19
  5. Step 5: Solve for x
    x = 11,149,904,840.19/112,256.81
  6. Step 6: Final answer
    x = 99,324.97

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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.