Home / 125,100.05-172,631.45-71,390.06

Finding the Fourth Proportional to 125,100.05, 172,631.45 and 71,390.06

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Solution

The fourth proportional to 125,100.05, 172,631.45 and 71,390.06 is: 98,514.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,100.05 : 172,631.45 = 71,390.06 : x
  2. Step 2: Convert to fraction form
    125,100.05/172,631.45 = 71,390.06/x
  3. Step 3: Cross multiply
    125,100.05x = 172,631.45 × 71,390.06
  4. Step 4: Simplify right side
    125,100.05x = 12,324,168,353.28
  5. Step 5: Solve for x
    x = 12,324,168,353.28/125,100.05
  6. Step 6: Final answer
    x = 98,514.50

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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.