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Finding the Fourth Proportional to 101,293.68, 139,874.94 and 63,118.38

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Solution

The fourth proportional to 101,293.68, 139,874.94 and 63,118.38 is: 87,159.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,293.68 : 139,874.94 = 63,118.38 : x
  2. Step 2: Convert to fraction form
    101,293.68/139,874.94 = 63,118.38/x
  3. Step 3: Cross multiply
    101,293.68x = 139,874.94 × 63,118.38
  4. Step 4: Simplify right side
    101,293.68x = 8,828,679,615.40
  5. Step 5: Solve for x
    x = 8,828,679,615.40/101,293.68
  6. Step 6: Final answer
    x = 87,159.23

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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.