Home / 145,121.90-217,675.16-45,270.65

Finding the Fourth Proportional to 145,121.90, 217,675.16 and 45,270.65

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Solution

The fourth proportional to 145,121.90, 217,675.16 and 45,270.65 is: 67,903.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,121.90 : 217,675.16 = 45,270.65 : x
  2. Step 2: Convert to fraction form
    145,121.90/217,675.16 = 45,270.65/x
  3. Step 3: Cross multiply
    145,121.90x = 217,675.16 × 45,270.65
  4. Step 4: Simplify right side
    145,121.90x = 9,854,294,667.32
  5. Step 5: Solve for x
    x = 9,854,294,667.32/145,121.90
  6. Step 6: Final answer
    x = 67,903.57

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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.