Home / 112,412.54-168,316.66-85,630.96

Finding the Fourth Proportional to 112,412.54, 168,316.66 and 85,630.96

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Solution

The fourth proportional to 112,412.54, 168,316.66 and 85,630.96 is: 128,216.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,412.54 : 168,316.66 = 85,630.96 : x
  2. Step 2: Convert to fraction form
    112,412.54/168,316.66 = 85,630.96/x
  3. Step 3: Cross multiply
    112,412.54x = 168,316.66 × 85,630.96
  4. Step 4: Simplify right side
    112,412.54x = 14,413,117,179.79
  5. Step 5: Solve for x
    x = 14,413,117,179.79/112,412.54
  6. Step 6: Final answer
    x = 128,216.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.