Home / 189,695.08-261,901.25-121,741.35

Finding the Fourth Proportional to 189,695.08, 261,901.25 and 121,741.35

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Solution

The fourth proportional to 189,695.08, 261,901.25 and 121,741.35 is: 168,081.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,695.08 : 261,901.25 = 121,741.35 : x
  2. Step 2: Convert to fraction form
    189,695.08/261,901.25 = 121,741.35/x
  3. Step 3: Cross multiply
    189,695.08x = 261,901.25 × 121,741.35
  4. Step 4: Simplify right side
    189,695.08x = 31,884,209,823.47
  5. Step 5: Solve for x
    x = 31,884,209,823.47/189,695.08
  6. Step 6: Final answer
    x = 168,081.37

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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.