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Finding the Fourth Proportional to 189,090.60, 260,957.36 and 108,544.20

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Solution

The fourth proportional to 189,090.60, 260,957.36 and 108,544.20 is: 149,798.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,090.60 : 260,957.36 = 108,544.20 : x
  2. Step 2: Convert to fraction form
    189,090.60/260,957.36 = 108,544.20/x
  3. Step 3: Cross multiply
    189,090.60x = 260,957.36 × 108,544.20
  4. Step 4: Simplify right side
    189,090.60x = 28,325,407,875.31
  5. Step 5: Solve for x
    x = 28,325,407,875.31/189,090.60
  6. Step 6: Final answer
    x = 149,798.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.