Home / 103,615.14-142,989.11-61,176.40

Finding the Fourth Proportional to 103,615.14, 142,989.11 and 61,176.40

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Solution

The fourth proportional to 103,615.14, 142,989.11 and 61,176.40 is: 84,423.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.14 : 142,989.11 = 61,176.40 : x
  2. Step 2: Convert to fraction form
    103,615.14/142,989.11 = 61,176.40/x
  3. Step 3: Cross multiply
    103,615.14x = 142,989.11 × 61,176.40
  4. Step 4: Simplify right side
    103,615.14x = 8,747,558,989.00
  5. Step 5: Solve for x
    x = 8,747,558,989.00/103,615.14
  6. Step 6: Final answer
    x = 84,423.56

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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.