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Finding the Fourth Proportional to 100,952.10, 139,312.02 and 55,634.28

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Solution

The fourth proportional to 100,952.10, 139,312.02 and 55,634.28 is: 76,774.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,952.10 : 139,312.02 = 55,634.28 : x
  2. Step 2: Convert to fraction form
    100,952.10/139,312.02 = 55,634.28/x
  3. Step 3: Cross multiply
    100,952.10x = 139,312.02 × 55,634.28
  4. Step 4: Simplify right side
    100,952.10x = 7,750,523,928.05
  5. Step 5: Solve for x
    x = 7,750,523,928.05/100,952.10
  6. Step 6: Final answer
    x = 76,774.27

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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.