Home / 108,933.60-163,400.40-81,285.60

Finding the Fourth Proportional to 108,933.60, 163,400.40 and 81,285.60

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Solution

The fourth proportional to 108,933.60, 163,400.40 and 81,285.60 is: 121,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,933.60 : 163,400.40 = 81,285.60 : x
  2. Step 2: Convert to fraction form
    108,933.60/163,400.40 = 81,285.60/x
  3. Step 3: Cross multiply
    108,933.60x = 163,400.40 × 81,285.60
  4. Step 4: Simplify right side
    108,933.60x = 13,282,099,554.24
  5. Step 5: Solve for x
    x = 13,282,099,554.24/108,933.60
  6. Step 6: Final answer
    x = 121,928.40

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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.