Home / 189,210.09-261,111.69-104,330.19

Finding the Fourth Proportional to 189,210.09, 261,111.69 and 104,330.19

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Solution

The fourth proportional to 189,210.09, 261,111.69 and 104,330.19 is: 143,976.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,210.09 : 261,111.69 = 104,330.19 : x
  2. Step 2: Convert to fraction form
    189,210.09/261,111.69 = 104,330.19/x
  3. Step 3: Cross multiply
    189,210.09x = 261,111.69 × 104,330.19
  4. Step 4: Simplify right side
    189,210.09x = 27,241,832,228.92
  5. Step 5: Solve for x
    x = 27,241,832,228.92/189,210.09
  6. Step 6: Final answer
    x = 143,976.64

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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.