Home / 125,559.32-188,338.56-78,845

Finding the Fourth Proportional to 125,559.32, 188,338.56 and 78,845

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Solution

The fourth proportional to 125,559.32, 188,338.56 and 78,845 is: 118,267.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,559.32 : 188,338.56 = 78,845 : x
  2. Step 2: Convert to fraction form
    125,559.32/188,338.56 = 78,845/x
  3. Step 3: Cross multiply
    125,559.32x = 188,338.56 × 78,845
  4. Step 4: Simplify right side
    125,559.32x = 14,849,553,763.20
  5. Step 5: Solve for x
    x = 14,849,553,763.20/125,559.32
  6. Step 6: Final answer
    x = 118,267.24

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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.