Home / 189,928.60-261,844.98-121,827.35

Finding the Fourth Proportional to 189,928.60, 261,844.98 and 121,827.35

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Solution

The fourth proportional to 189,928.60, 261,844.98 and 121,827.35 is: 167,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,928.60 : 261,844.98 = 121,827.35 : x
  2. Step 2: Convert to fraction form
    189,928.60/261,844.98 = 121,827.35/x
  3. Step 3: Cross multiply
    189,928.60x = 261,844.98 × 121,827.35
  4. Step 4: Simplify right side
    189,928.60x = 31,899,880,221.96
  5. Step 5: Solve for x
    x = 31,899,880,221.96/189,928.60
  6. Step 6: Final answer
    x = 167,957.23

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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.