Home / 103,615.24-142,994.28-61,172.86

Finding the Fourth Proportional to 103,615.24, 142,994.28 and 61,172.86

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Solution

The fourth proportional to 103,615.24, 142,994.28 and 61,172.86 is: 84,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.24 : 142,994.28 = 61,172.86 : x
  2. Step 2: Convert to fraction form
    103,615.24/142,994.28 = 61,172.86/x
  3. Step 3: Cross multiply
    103,615.24x = 142,994.28 × 61,172.86
  4. Step 4: Simplify right side
    103,615.24x = 8,747,369,071.24
  5. Step 5: Solve for x
    x = 8,747,369,071.24/103,615.24
  6. Step 6: Final answer
    x = 84,421.65

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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.