Home / 103,456.08-142,644.15-80,492.58

Finding the Fourth Proportional to 103,456.08, 142,644.15 and 80,492.58

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Solution

The fourth proportional to 103,456.08, 142,644.15 and 80,492.58 is: 110,982.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,456.08 : 142,644.15 = 80,492.58 : x
  2. Step 2: Convert to fraction form
    103,456.08/142,644.15 = 80,492.58/x
  3. Step 3: Cross multiply
    103,456.08x = 142,644.15 × 80,492.58
  4. Step 4: Simplify right side
    103,456.08x = 11,481,795,655.41
  5. Step 5: Solve for x
    x = 11,481,795,655.41/103,456.08
  6. Step 6: Final answer
    x = 110,982.32

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1.5x scale

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.