Home / 103,401.09-142,690.40-57,460.58

Finding the Fourth Proportional to 103,401.09, 142,690.40 and 57,460.58

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Solution

The fourth proportional to 103,401.09, 142,690.40 and 57,460.58 is: 79,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,401.09 : 142,690.40 = 57,460.58 : x
  2. Step 2: Convert to fraction form
    103,401.09/142,690.40 = 57,460.58/x
  3. Step 3: Cross multiply
    103,401.09x = 142,690.40 × 57,460.58
  4. Step 4: Simplify right side
    103,401.09x = 8,199,073,000.78
  5. Step 5: Solve for x
    x = 8,199,073,000.78/103,401.09
  6. Step 6: Final answer
    x = 79,293.87

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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.