Home / 145,223.05-217,519.12-70,185.83

Finding the Fourth Proportional to 145,223.05, 217,519.12 and 70,185.83

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Solution

The fourth proportional to 145,223.05, 217,519.12 and 70,185.83 is: 105,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,223.05 : 217,519.12 = 70,185.83 : x
  2. Step 2: Convert to fraction form
    145,223.05/217,519.12 = 70,185.83/x
  3. Step 3: Cross multiply
    145,223.05x = 217,519.12 × 70,185.83
  4. Step 4: Simplify right side
    145,223.05x = 15,266,759,247.93
  5. Step 5: Solve for x
    x = 15,266,759,247.93/145,223.05
  6. Step 6: Final answer
    x = 105,126.28

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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.