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Finding the Fourth Proportional to 173,889.60, 260,769.60 and 121,142.40

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Solution

The fourth proportional to 173,889.60, 260,769.60 and 121,142.40 is: 181,668.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,889.60 : 260,769.60 = 121,142.40 : x
  2. Step 2: Convert to fraction form
    173,889.60/260,769.60 = 121,142.40/x
  3. Step 3: Cross multiply
    173,889.60x = 260,769.60 × 121,142.40
  4. Step 4: Simplify right side
    173,889.60x = 31,590,255,191.04
  5. Step 5: Solve for x
    x = 31,590,255,191.04/173,889.60
  6. Step 6: Final answer
    x = 181,668.46

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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.