Home / 125,160.39-172,691.60-76,100.51

Finding the Fourth Proportional to 125,160.39, 172,691.60 and 76,100.51

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Solution

The fourth proportional to 125,160.39, 172,691.60 and 76,100.51 is: 105,000.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,160.39 : 172,691.60 = 76,100.51 : x
  2. Step 2: Convert to fraction form
    125,160.39/172,691.60 = 76,100.51/x
  3. Step 3: Cross multiply
    125,160.39x = 172,691.60 × 76,100.51
  4. Step 4: Simplify right side
    125,160.39x = 13,141,918,883.94
  5. Step 5: Solve for x
    x = 13,141,918,883.94/125,160.39
  6. Step 6: Final answer
    x = 105,000.62

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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.