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Finding the Fourth Proportional to 173,600.40, 260,400.60 and 121,069.20

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Solution

The fourth proportional to 173,600.40, 260,400.60 and 121,069.20 is: 181,603.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,600.40 : 260,400.60 = 121,069.20 : x
  2. Step 2: Convert to fraction form
    173,600.40/260,400.60 = 121,069.20/x
  3. Step 3: Cross multiply
    173,600.40x = 260,400.60 × 121,069.20
  4. Step 4: Simplify right side
    173,600.40x = 31,526,492,321.52
  5. Step 5: Solve for x
    x = 31,526,492,321.52/173,600.40
  6. Step 6: Final answer
    x = 181,603.80

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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.