Home / 103,881.88-143,357.04-56,135.23

Finding the Fourth Proportional to 103,881.88, 143,357.04 and 56,135.23

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Solution

The fourth proportional to 103,881.88, 143,357.04 and 56,135.23 is: 77,466.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,881.88 : 143,357.04 = 56,135.23 : x
  2. Step 2: Convert to fraction form
    103,881.88/143,357.04 = 56,135.23/x
  3. Step 3: Cross multiply
    103,881.88x = 143,357.04 × 56,135.23
  4. Step 4: Simplify right side
    103,881.88x = 8,047,380,412.52
  5. Step 5: Solve for x
    x = 8,047,380,412.52/103,881.88
  6. Step 6: Final answer
    x = 77,466.64

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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.