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Finding the Fourth Proportional to 101,176.29, 139,623.50 and 55,854.34

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Solution

The fourth proportional to 101,176.29, 139,623.50 and 55,854.34 is: 77,079.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,176.29 : 139,623.50 = 55,854.34 : x
  2. Step 2: Convert to fraction form
    101,176.29/139,623.50 = 55,854.34/x
  3. Step 3: Cross multiply
    101,176.29x = 139,623.50 × 55,854.34
  4. Step 4: Simplify right side
    101,176.29x = 7,798,578,231.57
  5. Step 5: Solve for x
    x = 7,798,578,231.57/101,176.29
  6. Step 6: Final answer
    x = 77,079.11

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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.