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Finding the Fourth Proportional to 109,751.80, 164,627.70 and 74,322.40

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Solution

The fourth proportional to 109,751.80, 164,627.70 and 74,322.40 is: 111,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,751.80 : 164,627.70 = 74,322.40 : x
  2. Step 2: Convert to fraction form
    109,751.80/164,627.70 = 74,322.40/x
  3. Step 3: Cross multiply
    109,751.80x = 164,627.70 × 74,322.40
  4. Step 4: Simplify right side
    109,751.80x = 12,235,525,770.48
  5. Step 5: Solve for x
    x = 12,235,525,770.48/109,751.80
  6. Step 6: Final answer
    x = 111,483.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.