Home / 125,128.11-187,653.33-45,155.69

Finding the Fourth Proportional to 125,128.11, 187,653.33 and 45,155.69

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Solution

The fourth proportional to 125,128.11, 187,653.33 and 45,155.69 is: 67,719.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,128.11 : 187,653.33 = 45,155.69 : x
  2. Step 2: Convert to fraction form
    125,128.11/187,653.33 = 45,155.69/x
  3. Step 3: Cross multiply
    125,128.11x = 187,653.33 × 45,155.69
  4. Step 4: Simplify right side
    125,128.11x = 8,473,615,596.95
  5. Step 5: Solve for x
    x = 8,473,615,596.95/125,128.11
  6. Step 6: Final answer
    x = 67,719.52

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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.