Home / 102,390.06-141,293.28-57,072.98

Finding the Fourth Proportional to 102,390.06, 141,293.28 and 57,072.98

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Solution

The fourth proportional to 102,390.06, 141,293.28 and 57,072.98 is: 78,757.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,390.06 : 141,293.28 = 57,072.98 : x
  2. Step 2: Convert to fraction form
    102,390.06/141,293.28 = 57,072.98/x
  3. Step 3: Cross multiply
    102,390.06x = 141,293.28 × 57,072.98
  4. Step 4: Simplify right side
    102,390.06x = 8,064,028,543.57
  5. Step 5: Solve for x
    x = 8,064,028,543.57/102,390.06
  6. Step 6: Final answer
    x = 78,757.92

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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.