Home / 125,349.14-172,991.31-71,636.42

Finding the Fourth Proportional to 125,349.14, 172,991.31 and 71,636.42

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Solution

The fourth proportional to 125,349.14, 172,991.31 and 71,636.42 is: 98,863.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,349.14 : 172,991.31 = 71,636.42 : x
  2. Step 2: Convert to fraction form
    125,349.14/172,991.31 = 71,636.42/x
  3. Step 3: Cross multiply
    125,349.14x = 172,991.31 × 71,636.42
  4. Step 4: Simplify right side
    125,349.14x = 12,392,478,139.51
  5. Step 5: Solve for x
    x = 12,392,478,139.51/125,349.14
  6. Step 6: Final answer
    x = 98,863.69

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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.