Home / 144,680.81-217,354.73-138,702.20

Finding the Fourth Proportional to 144,680.81, 217,354.73 and 138,702.20

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Solution

The fourth proportional to 144,680.81, 217,354.73 and 138,702.20 is: 208,373.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,680.81 : 217,354.73 = 138,702.20 : x
  2. Step 2: Convert to fraction form
    144,680.81/217,354.73 = 138,702.20/x
  3. Step 3: Cross multiply
    144,680.81x = 217,354.73 × 138,702.20
  4. Step 4: Simplify right side
    144,680.81x = 30,147,577,451.12
  5. Step 5: Solve for x
    x = 30,147,577,451.12/144,680.81
  6. Step 6: Final answer
    x = 208,373.03

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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.