Home / 453,721.70-680,681.10-138,170.36

Finding the Fourth Proportional to 453,721.70, 680,681.10 and 138,170.36

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Solution

The fourth proportional to 453,721.70, 680,681.10 and 138,170.36 is: 207,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,721.70 : 680,681.10 = 138,170.36 : x
  2. Step 2: Convert to fraction form
    453,721.70/680,681.10 = 138,170.36/x
  3. Step 3: Cross multiply
    453,721.70x = 680,681.10 × 138,170.36
  4. Step 4: Simplify right side
    453,721.70x = 94,049,952,632.20
  5. Step 5: Solve for x
    x = 94,049,952,632.20/453,721.70
  6. Step 6: Final answer
    x = 207,285.55

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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.