Home / 125,538.26-188,307.12-78,823.94

Finding the Fourth Proportional to 125,538.26, 188,307.12 and 78,823.94

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Solution

The fourth proportional to 125,538.26, 188,307.12 and 78,823.94 is: 118,235.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,538.26 : 188,307.12 = 78,823.94 : x
  2. Step 2: Convert to fraction form
    125,538.26/188,307.12 = 78,823.94/x
  3. Step 3: Cross multiply
    125,538.26x = 188,307.12 × 78,823.94
  4. Step 4: Simplify right side
    125,538.26x = 14,843,109,128.45
  5. Step 5: Solve for x
    x = 14,843,109,128.45/125,538.26
  6. Step 6: Final answer
    x = 118,235.74

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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.