Home / 125,503.15-188,128.37-55,370.11

Finding the Fourth Proportional to 125,503.15, 188,128.37 and 55,370.11

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Solution

The fourth proportional to 125,503.15, 188,128.37 and 55,370.11 is: 82,999.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,503.15 : 188,128.37 = 55,370.11 : x
  2. Step 2: Convert to fraction form
    125,503.15/188,128.37 = 55,370.11/x
  3. Step 3: Cross multiply
    125,503.15x = 188,128.37 × 55,370.11
  4. Step 4: Simplify right side
    125,503.15x = 10,416,688,264.17
  5. Step 5: Solve for x
    x = 10,416,688,264.17/125,503.15
  6. Step 6: Final answer
    x = 82,999.42

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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.