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Finding the Fourth Proportional to 100,952.83, 139,314.62 and 55,630.80

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Solution

The fourth proportional to 100,952.83, 139,314.62 and 55,630.80 is: 76,770.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,952.83 : 139,314.62 = 55,630.80 : x
  2. Step 2: Convert to fraction form
    100,952.83/139,314.62 = 55,630.80/x
  3. Step 3: Cross multiply
    100,952.83x = 139,314.62 × 55,630.80
  4. Step 4: Simplify right side
    100,952.83x = 7,750,183,955.53
  5. Step 5: Solve for x
    x = 7,750,183,955.53/100,952.83
  6. Step 6: Final answer
    x = 76,770.35

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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.