Home / 125,845.42-173,670.52-72,140.80

Finding the Fourth Proportional to 125,845.42, 173,670.52 and 72,140.80

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Solution

The fourth proportional to 125,845.42, 173,670.52 and 72,140.80 is: 99,556.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,845.42 : 173,670.52 = 72,140.80 : x
  2. Step 2: Convert to fraction form
    125,845.42/173,670.52 = 72,140.80/x
  3. Step 3: Cross multiply
    125,845.42x = 173,670.52 × 72,140.80
  4. Step 4: Simplify right side
    125,845.42x = 12,528,730,249.22
  5. Step 5: Solve for x
    x = 12,528,730,249.22/125,845.42
  6. Step 6: Final answer
    x = 99,556.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.