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Finding the Fourth Proportional to 100,800.52, 139,102.16 and 54,858.22

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Solution

The fourth proportional to 100,800.52, 139,102.16 and 54,858.22 is: 75,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,800.52 : 139,102.16 = 54,858.22 : x
  2. Step 2: Convert to fraction form
    100,800.52/139,102.16 = 54,858.22/x
  3. Step 3: Cross multiply
    100,800.52x = 139,102.16 × 54,858.22
  4. Step 4: Simplify right side
    100,800.52x = 7,630,896,273.71
  5. Step 5: Solve for x
    x = 7,630,896,273.71/100,800.52
  6. Step 6: Final answer
    x = 75,702.95

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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.