Home / 103,985.16-143,499.62-56,238.51

Finding the Fourth Proportional to 103,985.16, 143,499.62 and 56,238.51

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Solution

The fourth proportional to 103,985.16, 143,499.62 and 56,238.51 is: 77,609.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,985.16 : 143,499.62 = 56,238.51 : x
  2. Step 2: Convert to fraction form
    103,985.16/143,499.62 = 56,238.51/x
  3. Step 3: Cross multiply
    103,985.16x = 143,499.62 × 56,238.51
  4. Step 4: Simplify right side
    103,985.16x = 8,070,203,815.68
  5. Step 5: Solve for x
    x = 8,070,203,815.68/103,985.16
  6. Step 6: Final answer
    x = 77,609.19

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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.