Home / 144,721.08-217,155.75-68,905.42

Finding the Fourth Proportional to 144,721.08, 217,155.75 and 68,905.42

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Solution

The fourth proportional to 144,721.08, 217,155.75 and 68,905.42 is: 103,393.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,721.08 : 217,155.75 = 68,905.42 : x
  2. Step 2: Convert to fraction form
    144,721.08/217,155.75 = 68,905.42/x
  3. Step 3: Cross multiply
    144,721.08x = 217,155.75 × 68,905.42
  4. Step 4: Simplify right side
    144,721.08x = 14,963,208,159.17
  5. Step 5: Solve for x
    x = 14,963,208,159.17/144,721.08
  6. Step 6: Final answer
    x = 103,393.43

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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.