Home / 103,913.10-143,399.61-56,166.33

Finding the Fourth Proportional to 103,913.10, 143,399.61 and 56,166.33

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Solution

The fourth proportional to 103,913.10, 143,399.61 and 56,166.33 is: 77,509.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,913.10 : 143,399.61 = 56,166.33 : x
  2. Step 2: Convert to fraction form
    103,913.10/143,399.61 = 56,166.33/x
  3. Step 3: Cross multiply
    103,913.10x = 143,399.61 × 56,166.33
  4. Step 4: Simplify right side
    103,913.10x = 8,054,229,817.13
  5. Step 5: Solve for x
    x = 8,054,229,817.13/103,913.10
  6. Step 6: Final answer
    x = 77,509.28

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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.