Home / 103,621.24-143,002.56-61,178.86

Finding the Fourth Proportional to 103,621.24, 143,002.56 and 61,178.86

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Solution

The fourth proportional to 103,621.24, 143,002.56 and 61,178.86 is: 84,429.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.24 : 143,002.56 = 61,178.86 : x
  2. Step 2: Convert to fraction form
    103,621.24/143,002.56 = 61,178.86/x
  3. Step 3: Cross multiply
    103,621.24x = 143,002.56 × 61,178.86
  4. Step 4: Simplify right side
    103,621.24x = 8,748,733,597.88
  5. Step 5: Solve for x
    x = 8,748,733,597.88/103,621.24
  6. Step 6: Final answer
    x = 84,429.93

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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.