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Finding the Fourth Proportional to 173,885.60, 260,763.60 and 121,138.40

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Solution

The fourth proportional to 173,885.60, 260,763.60 and 121,138.40 is: 181,662.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,885.60 : 260,763.60 = 121,138.40 : x
  2. Step 2: Convert to fraction form
    173,885.60/260,763.60 = 121,138.40/x
  3. Step 3: Cross multiply
    173,885.60x = 260,763.60 × 121,138.40
  4. Step 4: Simplify right side
    173,885.60x = 31,588,485,282.24
  5. Step 5: Solve for x
    x = 31,588,485,282.24/173,885.60
  6. Step 6: Final answer
    x = 181,662.46

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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.