Home / 103,989.33-143,505.36-56,242.62

Finding the Fourth Proportional to 103,989.33, 143,505.36 and 56,242.62

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Solution

The fourth proportional to 103,989.33, 143,505.36 and 56,242.62 is: 77,614.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,989.33 : 143,505.36 = 56,242.62 : x
  2. Step 2: Convert to fraction form
    103,989.33/143,505.36 = 56,242.62/x
  3. Step 3: Cross multiply
    103,989.33x = 143,505.36 × 56,242.62
  4. Step 4: Simplify right side
    103,989.33x = 8,071,117,430.44
  5. Step 5: Solve for x
    x = 8,071,117,430.44/103,989.33
  6. Step 6: Final answer
    x = 77,614.86

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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.