Home / 125,139.69-187,707.93-30,370.65

Finding the Fourth Proportional to 125,139.69, 187,707.93 and 30,370.65

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Solution

The fourth proportional to 125,139.69, 187,707.93 and 30,370.65 is: 45,555.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,139.69 : 187,707.93 = 30,370.65 : x
  2. Step 2: Convert to fraction form
    125,139.69/187,707.93 = 30,370.65/x
  3. Step 3: Cross multiply
    125,139.69x = 187,707.93 × 30,370.65
  4. Step 4: Simplify right side
    125,139.69x = 5,700,811,844.25
  5. Step 5: Solve for x
    x = 5,700,811,844.25/125,139.69
  6. Step 6: Final answer
    x = 45,555.59

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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.