Home / 137,581.12-189,889.18-89,242.96

Finding the Fourth Proportional to 137,581.12, 189,889.18 and 89,242.96

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Solution

The fourth proportional to 137,581.12, 189,889.18 and 89,242.96 is: 123,172.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,581.12 : 189,889.18 = 89,242.96 : x
  2. Step 2: Convert to fraction form
    137,581.12/189,889.18 = 89,242.96/x
  3. Step 3: Cross multiply
    137,581.12x = 189,889.18 × 89,242.96
  4. Step 4: Simplify right side
    137,581.12x = 16,946,271,099.51
  5. Step 5: Solve for x
    x = 16,946,271,099.51/137,581.12
  6. Step 6: Final answer
    x = 123,172.94

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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.