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Finding the Fourth Proportional to 101,216.52, 139,680.18 and 55,897.56

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Solution

The fourth proportional to 101,216.52, 139,680.18 and 55,897.56 is: 77,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,216.52 : 139,680.18 = 55,897.56 : x
  2. Step 2: Convert to fraction form
    101,216.52/139,680.18 = 55,897.56/x
  3. Step 3: Cross multiply
    101,216.52x = 139,680.18 × 55,897.56
  4. Step 4: Simplify right side
    101,216.52x = 7,807,781,242.36
  5. Step 5: Solve for x
    x = 7,807,781,242.36/101,216.52
  6. Step 6: Final answer
    x = 77,139.40

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1.5x scale

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.