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Finding the Fourth Proportional to 183,456.45, 275,184.68 and 78,480.45

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Solution

The fourth proportional to 183,456.45, 275,184.68 and 78,480.45 is: 117,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,456.45 : 275,184.68 = 78,480.45 : x
  2. Step 2: Convert to fraction form
    183,456.45/275,184.68 = 78,480.45/x
  3. Step 3: Cross multiply
    183,456.45x = 275,184.68 × 78,480.45
  4. Step 4: Simplify right side
    183,456.45x = 21,596,617,127.10
  5. Step 5: Solve for x
    x = 21,596,617,127.10/183,456.45
  6. Step 6: Final answer
    x = 117,720.68

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1.5x scale

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.