Home / 176,787.26-243,971.91-100,309.60

Finding the Fourth Proportional to 176,787.26, 243,971.91 and 100,309.60

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Solution

The fourth proportional to 176,787.26, 243,971.91 and 100,309.60 is: 138,430.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,787.26 : 243,971.91 = 100,309.60 : x
  2. Step 2: Convert to fraction form
    176,787.26/243,971.91 = 100,309.60/x
  3. Step 3: Cross multiply
    176,787.26x = 243,971.91 × 100,309.60
  4. Step 4: Simplify right side
    176,787.26x = 24,472,722,981.93
  5. Step 5: Solve for x
    x = 24,472,722,981.93/176,787.26
  6. Step 6: Final answer
    x = 138,430.35

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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.