Home / 103,860.78-143,327.93-56,114.12

Finding the Fourth Proportional to 103,860.78, 143,327.93 and 56,114.12

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Solution

The fourth proportional to 103,860.78, 143,327.93 and 56,114.12 is: 77,437.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,860.78 : 143,327.93 = 56,114.12 : x
  2. Step 2: Convert to fraction form
    103,860.78/143,327.93 = 56,114.12/x
  3. Step 3: Cross multiply
    103,860.78x = 143,327.93 × 56,114.12
  4. Step 4: Simplify right side
    103,860.78x = 8,042,719,666.16
  5. Step 5: Solve for x
    x = 8,042,719,666.16/103,860.78
  6. Step 6: Final answer
    x = 77,437.50

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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.