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Finding the Fourth Proportional to 113,140.80, 169,711.20 and 100,893.60

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Solution

The fourth proportional to 113,140.80, 169,711.20 and 100,893.60 is: 151,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,140.80 : 169,711.20 = 100,893.60 : x
  2. Step 2: Convert to fraction form
    113,140.80/169,711.20 = 100,893.60/x
  3. Step 3: Cross multiply
    113,140.80x = 169,711.20 × 100,893.60
  4. Step 4: Simplify right side
    113,140.80x = 17,122,773,928.32
  5. Step 5: Solve for x
    x = 17,122,773,928.32/113,140.80
  6. Step 6: Final answer
    x = 151,340.40

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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.