Home / 103,428.41-142,746.66-63,165.33

Finding the Fourth Proportional to 103,428.41, 142,746.66 and 63,165.33

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Solution

The fourth proportional to 103,428.41, 142,746.66 and 63,165.33 is: 87,177.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,428.41 : 142,746.66 = 63,165.33 : x
  2. Step 2: Convert to fraction form
    103,428.41/142,746.66 = 63,165.33/x
  3. Step 3: Cross multiply
    103,428.41x = 142,746.66 × 63,165.33
  4. Step 4: Simplify right side
    103,428.41x = 9,016,639,885.30
  5. Step 5: Solve for x
    x = 9,016,639,885.30/103,428.41
  6. Step 6: Final answer
    x = 87,177.60

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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.