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Finding the Fourth Proportional to 173,509.60, 260,021.40 and 138,031.60

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Solution

The fourth proportional to 173,509.60, 260,021.40 and 138,031.60 is: 206,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,509.60 : 260,021.40 = 138,031.60 : x
  2. Step 2: Convert to fraction form
    173,509.60/260,021.40 = 138,031.60/x
  3. Step 3: Cross multiply
    173,509.60x = 260,021.40 × 138,031.60
  4. Step 4: Simplify right side
    173,509.60x = 35,891,169,876.24
  5. Step 5: Solve for x
    x = 35,891,169,876.24/173,509.60
  6. Step 6: Final answer
    x = 206,854.09

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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.