Home / 165,378.81-247,871.39-115,187.16

Finding the Fourth Proportional to 165,378.81, 247,871.39 and 115,187.16

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Solution

The fourth proportional to 165,378.81, 247,871.39 and 115,187.16 is: 172,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,378.81 : 247,871.39 = 115,187.16 : x
  2. Step 2: Convert to fraction form
    165,378.81/247,871.39 = 115,187.16/x
  3. Step 3: Cross multiply
    165,378.81x = 247,871.39 × 115,187.16
  4. Step 4: Simplify right side
    165,378.81x = 28,551,602,460.86
  5. Step 5: Solve for x
    x = 28,551,602,460.86/165,378.81
  6. Step 6: Final answer
    x = 172,643.65

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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.