Home / 125,904.40-188,856.60-112,126.30

Finding the Fourth Proportional to 125,904.40, 188,856.60 and 112,126.30

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Solution

The fourth proportional to 125,904.40, 188,856.60 and 112,126.30 is: 168,189.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,904.40 : 188,856.60 = 112,126.30 : x
  2. Step 2: Convert to fraction form
    125,904.40/188,856.60 = 112,126.30/x
  3. Step 3: Cross multiply
    125,904.40x = 188,856.60 × 112,126.30
  4. Step 4: Simplify right side
    125,904.40x = 21,175,791,788.58
  5. Step 5: Solve for x
    x = 21,175,791,788.58/125,904.40
  6. Step 6: Final answer
    x = 168,189.45

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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.