Home / 123,969.04-185,875.64-90,247.12

Finding the Fourth Proportional to 123,969.04, 185,875.64 and 90,247.12

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Solution

The fourth proportional to 123,969.04, 185,875.64 and 90,247.12 is: 135,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,969.04 : 185,875.64 = 90,247.12 : x
  2. Step 2: Convert to fraction form
    123,969.04/185,875.64 = 90,247.12/x
  3. Step 3: Cross multiply
    123,969.04x = 185,875.64 × 90,247.12
  4. Step 4: Simplify right side
    123,969.04x = 16,774,741,188.16
  5. Step 5: Solve for x
    x = 16,774,741,188.16/123,969.04
  6. Step 6: Final answer
    x = 135,313.96

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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.