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Finding the Fourth Proportional to 123,539.40, 185,309.10 and 121,571.10

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Solution

The fourth proportional to 123,539.40, 185,309.10 and 121,571.10 is: 182,356.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,539.40 : 185,309.10 = 121,571.10 : x
  2. Step 2: Convert to fraction form
    123,539.40/185,309.10 = 121,571.10/x
  3. Step 3: Cross multiply
    123,539.40x = 185,309.10 × 121,571.10
  4. Step 4: Simplify right side
    123,539.40x = 22,528,231,127.01
  5. Step 5: Solve for x
    x = 22,528,231,127.01/123,539.40
  6. Step 6: Final answer
    x = 182,356.65

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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.