Home / 137,287.68-189,464.40-83,564.16

Finding the Fourth Proportional to 137,287.68, 189,464.40 and 83,564.16

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Solution

The fourth proportional to 137,287.68, 189,464.40 and 83,564.16 is: 115,323.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,287.68 : 189,464.40 = 83,564.16 : x
  2. Step 2: Convert to fraction form
    137,287.68/189,464.40 = 83,564.16/x
  3. Step 3: Cross multiply
    137,287.68x = 189,464.40 × 83,564.16
  4. Step 4: Simplify right side
    137,287.68x = 15,832,433,435.90
  5. Step 5: Solve for x
    x = 15,832,433,435.90/137,287.68
  6. Step 6: Final answer
    x = 115,323.05

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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.