Home / 128,680.25-193,044.63-48,742.16

Finding the Fourth Proportional to 128,680.25, 193,044.63 and 48,742.16

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Solution

The fourth proportional to 128,680.25, 193,044.63 and 48,742.16 is: 73,122.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,680.25 : 193,044.63 = 48,742.16 : x
  2. Step 2: Convert to fraction form
    128,680.25/193,044.63 = 48,742.16/x
  3. Step 3: Cross multiply
    128,680.25x = 193,044.63 × 48,742.16
  4. Step 4: Simplify right side
    128,680.25x = 9,409,411,460.16
  5. Step 5: Solve for x
    x = 9,409,411,460.16/128,680.25
  6. Step 6: Final answer
    x = 73,122.42

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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.