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Finding the Fourth Proportional to 112,073.60, 168,110.40 and 85,829.60

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Solution

The fourth proportional to 112,073.60, 168,110.40 and 85,829.60 is: 128,744.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,073.60 : 168,110.40 = 85,829.60 : x
  2. Step 2: Convert to fraction form
    112,073.60/168,110.40 = 85,829.60/x
  3. Step 3: Cross multiply
    112,073.60x = 168,110.40 × 85,829.60
  4. Step 4: Simplify right side
    112,073.60x = 14,428,848,387.84
  5. Step 5: Solve for x
    x = 14,428,848,387.84/112,073.60
  6. Step 6: Final answer
    x = 128,744.40

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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.