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Finding the Fourth Proportional to 109,510.60, 164,144.40 and 42,928.60

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Solution

The fourth proportional to 109,510.60, 164,144.40 and 42,928.60 is: 64,345.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,510.60 : 164,144.40 = 42,928.60 : x
  2. Step 2: Convert to fraction form
    109,510.60/164,144.40 = 42,928.60/x
  3. Step 3: Cross multiply
    109,510.60x = 164,144.40 × 42,928.60
  4. Step 4: Simplify right side
    109,510.60x = 7,046,489,289.84
  5. Step 5: Solve for x
    x = 7,046,489,289.84/109,510.60
  6. Step 6: Final answer
    x = 64,345.27

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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.