Home / 125,564.40-188,346.60-78,325.20

Finding the Fourth Proportional to 125,564.40, 188,346.60 and 78,325.20

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Solution

The fourth proportional to 125,564.40, 188,346.60 and 78,325.20 is: 117,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,564.40 : 188,346.60 = 78,325.20 : x
  2. Step 2: Convert to fraction form
    125,564.40/188,346.60 = 78,325.20/x
  3. Step 3: Cross multiply
    125,564.40x = 188,346.60 × 78,325.20
  4. Step 4: Simplify right side
    125,564.40x = 14,752,285,114.32
  5. Step 5: Solve for x
    x = 14,752,285,114.32/125,564.40
  6. Step 6: Final answer
    x = 117,487.80

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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.